{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-84782 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-84782 is a high-severity vulnerability in Openssl Openssl, published on 29 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-84782 and fix it if it is affected.\n\nWhat it is: CVE-2026-84782 is a high-severity vulnerability in Openssl Openssl, published on 29 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-84782 in the wild and no public exploit code.\n\nAffected product: Openssl Openssl. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-84782/ (Markdown: https://insights.sbomify.com/CVE-2026-84782/index.md)","id":"CVE-2026-84782","markdown":"https://insights.sbomify.com/CVE-2026-84782/index.md","name":"CVE-2026-84782","record":{"aliases":["ALPINE-CVE-2026-84782","ALSA-2026:76918","ALSA-2026:77396","ALSA-2026:80510","AZL-105363","AZL-105444","AZL-105483","AZL-105501","AZL-105567","AZL-105615","AZL-105696","AZL-105822","AZL-105864","BELL-CVE-2026-84782","CLEANSTART-2026-VF53508","CLSA-2026-1792066324","CLSA-2026-1792506549","CLSA-2026-1792537769","DEBIAN-CVE-2026-84782","ECHO-6278-6c73-07a6","GHSA-6w84-hw79-7wgf","MINI-r8m9-f3mg-2938","RHSA-2026:73496","RHSA-2026:76918","RHSA-2026:77396","RHSA-2026:80510","RLSA-2026:76918","RLSA-2026:77396","RLSA-2026:80510","ROOT-OS-ALPINE-315-CVE-2026-84782","ROOT-OS-ALPINE-317-CVE-2026-84782","SUSE-SU-2026:4418-1","SUSE-SU-2026:4560-1","UBUNTU-CVE-2026-84782"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["data_read","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"OpenSSL library","requires_auth":"none","summary":"Attackers can trigger DTLS retransmission bugs to disclose heap memory or cause denial of service in applications using OpenSSL.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"openssl","cpe":[{"product":"openssl","vendor":"openssl"}],"cvss":{"score":8.2,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-125","name":"Out-of-bounds Read"}],"description":"Issue summary: The DTLS retransmission logic does not correctly handle\na handshake message write that is suspended part-way through.\nThe retransmitted message can be read past the message buffer and\nthe retransmission overwrites the internal state the suspended write\nneeds to resume correctly.\n\nImpact summary: The retransmitted message can disclose a heap memory\nto the peer as plaintext handshake data or cause a crash and a Denial\nof Service when the read reaches an unmapped memory region.\n\nCWE: CWE-125: Out-of-bounds Read\n\nDescription: DTLS handshake messages can be written out in multiple\nfragments, and a write can suspend mid-message (returning WANT_WRITE)\nif the underlying transport temporarily cannot accept more data. While\nsuch a write is suspended, the DTLS retransmission timer may\nindependently fire and ask the retransmission logic to resend an\nearlier, already-acknowledged-as-sent message from its retransmit\nqueue.\n\nThe retransmission logic reused the same internal buffer and position\ntracking as the message that was still being written, without\nresetting the position back to the start of the message being\nretransmitted. As a result the retransmission was read starting from\nwherever the suspended write had left off, producing a mislabelled\nmessage whose body was leftover bytes from the other, larger message\nstill in flight - content that was never meant to be sent at that\npoint, and which could run past the end of the allocated buffer.\n\nSeparately, even when the retransmission is positioned correctly,\nallowing it to run to completion while another write is suspended\noverwrites the same shared bookkeeping that the suspended write\ndepends on to resume. When the application later resumes the\nsuspended write (via a subsequent SSL_read(), SSL_write(),\nSSL_accept(), or SSL_connect() call), it finds that bookkeeping in a\nstate inconsistent with the message and aborts the process in\na debugging build.\n\nThe fix resets the retransmission's read position to the start of the\nmessage before resending, and skips retransmission entirely whenever a\nhandshake write is still suspended, deferring to the next call that\nresumes it instead.\n\nFIPS impact: no\nThe affected code is outside the FIPS module boundary.","ecosystems":["AlmaLinux:10","AlmaLinux:8","AlmaLinux:9","Red Hat:enterprise_linux:10.2","Red Hat:enterprise_linux:8::appstream","Red Hat:enterprise_linux:9::appstream","Red Hat:enterprise_linux:9::baseos","Red Hat:hummingbird:1","Rocky Linux:10","Rocky Linux:8","Rocky Linux:9","SUSE:Linux Enterprise Live Patching 15 SP6","SUSE:Linux Enterprise Live Patching 15 SP7"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"DTLS Retransmits Handshake Messages From a Stale Buffer Offset","id":"CVE-2026-84782","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"openssl:openssl","products":["openssl:openssl"],"type":"information_disclosure","year":"2026"},"n_packages":35,"n_references":5,"next":{"headline":"Use-After-Free in X.509 Extension Cache Under Concurrent Use","id":"CVE-2026-84783"},"packages":[{"ecosystem":"AlmaLinux:10","fixed":["1:3.5.8-2.el10_2.alma.1"],"introduced":["0"],"last_affected":[],"package":"openssl","purl":"pkg:rpm/almalinux/openssl","source":"ALSA-2026:76918"},{"ecosystem":"AlmaLinux:10","fixed":["1:3.5.8-2.el10_2.alma.1"],"introduced":["0"],"last_affected":[],"package":"openssl-devel","purl":"pkg:rpm/almalinux/openssl-devel","source":"ALSA-2026:76918"},{"ecosystem":"AlmaLinux:10","fixed":["1:3.5.8-2.el10_2.alma.1"],"introduced":["0"],"last_affected":[],"package":"openssl-libs","purl":"pkg:rpm/almalinux/openssl-libs","source":"ALSA-2026:76918"},{"ecosystem":"AlmaLinux:10","fixed":["1:3.5.8-2.el10_2.alma.1"],"introduced":["0"],"last_affected":[],"package":"openssl-perl","purl":"pkg:rpm/almalinux/openssl-perl","source":"ALSA-2026:76918"},{"ecosystem":"AlmaLinux:8","fixed":["1:1.0.2o-4.el8_10.4"],"introduced":["0"],"last_affected":[],"package":"compat-openssl10","purl":"pkg:rpm/almalinux/compat-openssl10","source":"ALSA-2026:80510"},{"ecosystem":"AlmaLinux:9","fixed":["1:3.5.8-2.el9_8"],"introduced":["0"],"last_affected":[],"package":"openssl","purl":"pkg:rpm/almalinux/openssl","source":"ALSA-2026:77396"},{"ecosystem":"AlmaLinux:9","fixed":["1:3.5.8-2.el9_8"],"introduced":["0"],"last_affected":[],"package":"openssl-devel","purl":"pkg:rpm/almalinux/openssl-devel","source":"ALSA-2026:77396"},{"ecosystem":"AlmaLinux:9","fixed":["1:3.5.8-2.el9_8"],"introduced":["0"],"last_affected":[],"package":"openssl-libs","purl":"pkg:rpm/almalinux/openssl-libs","source":"ALSA-2026:77396"},{"ecosystem":"AlmaLinux:9","fixed":["1:3.5.8-2.el9_8"],"introduced":["0"],"last_affected":[],"package":"openssl-perl","purl":"pkg:rpm/almalinux/openssl-perl","source":"ALSA-2026:77396"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["1:3.5.8-2.el10_2"],"introduced":["0"],"last_affected":[],"package":"openssl","purl":"pkg:rpm/redhat/openssl","source":"RHSA-2026:76918"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["1:3.5.8-2.el10_2"],"introduced":["0"],"last_affected":[],"package":"openssl-debuginfo","purl":"pkg:rpm/redhat/openssl-debuginfo","source":"RHSA-2026:76918"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["1:3.5.8-2.el10_2"],"introduced":["0"],"last_affected":[],"package":"openssl-debugsource","purl":"pkg:rpm/redhat/openssl-debugsource","source":"RHSA-2026:76918"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["1:3.5.8-2.el10_2"],"introduced":["0"],"last_affected":[],"package":"openssl-devel","purl":"pkg:rpm/redhat/openssl-devel","source":"RHSA-2026:76918"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["1:3.5.8-2.el10_2"],"introduced":["0"],"last_affected":[],"package":"openssl-libs","purl":"pkg:rpm/redhat/openssl-libs","source":"RHSA-2026:76918"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["1:3.5.8-2.el10_2"],"introduced":["0"],"last_affected":[],"package":"openssl-libs-debuginfo","purl":"pkg:rpm/redhat/openssl-libs-debuginfo","source":"RHSA-2026:76918"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["1:3.5.8-2.el10_2"],"introduced":["0"],"last_affected":[],"package":"openssl-perl","purl":"pkg:rpm/redhat/openssl-perl","source":"RHSA-2026:76918"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["1:1.0.2o-4.el8_10.4"],"introduced":["0"],"last_affected":[],"package":"compat-openssl10","purl":"pkg:rpm/redhat/compat-openssl10","source":"RHSA-2026:80510"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["1:1.0.2o-4.el8_10.4"],"introduced":["0"],"last_affected":[],"package":"compat-openssl10-debuginfo","purl":"pkg:rpm/redhat/compat-openssl10-debuginfo","source":"RHSA-2026:80510"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["1:1.0.2o-4.el8_10.4"],"introduced":["0"],"last_affected":[],"package":"compat-openssl10-debugsource","purl":"pkg:rpm/redhat/compat-openssl10-debugsource","source":"RHSA-2026:80510"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["1:3.5.8-2.el9_8"],"introduced":["0"],"last_affected":[],"package":"openssl-debuginfo","purl":"pkg:rpm/redhat/openssl-debuginfo","source":"RHSA-2026:77396"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["1:3.5.8-2.el9_8"],"introduced":["0"],"last_affected":[],"package":"openssl-debugsource","purl":"pkg:rpm/redhat/openssl-debugsource","source":"RHSA-2026:77396"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["1:3.5.8-2.el9_8"],"introduced":["0"],"last_affected":[],"package":"openssl-devel","purl":"pkg:rpm/redhat/openssl-devel","source":"RHSA-2026:77396"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["1:3.5.8-2.el9_8"],"introduced":["0"],"last_affected":[],"package":"openssl-libs-debuginfo","purl":"pkg:rpm/redhat/openssl-libs-debuginfo","source":"RHSA-2026:77396"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["1:3.5.8-2.el9_8"],"introduced":["0"],"last_affected":[],"package":"openssl-perl","purl":"pkg:rpm/redhat/openssl-perl","source":"RHSA-2026:77396"},{"ecosystem":"Red Hat:enterprise_linux:9::baseos","fixed":["1:3.5.8-2.el9_8"],"introduced":["0"],"last_affected":[],"package":"openssl","purl":"pkg:rpm/redhat/openssl","source":"RHSA-2026:77396"},{"ecosystem":"Red Hat:enterprise_linux:9::baseos","fixed":["1:3.5.8-2.el9_8"],"introduced":["0"],"last_affected":[],"package":"openssl-debuginfo","purl":"pkg:rpm/redhat/openssl-debuginfo","source":"RHSA-2026:77396"},{"ecosystem":"Red Hat:enterprise_linux:9::baseos","fixed":["1:3.5.8-2.el9_8"],"introduced":["0"],"last_affected":[],"package":"openssl-debugsource","purl":"pkg:rpm/redhat/openssl-debugsource","source":"RHSA-2026:77396"},{"ecosystem":"Red Hat:enterprise_linux:9::baseos","fixed":["1:3.5.8-2.el9_8"],"introduced":["0"],"last_affected":[],"package":"openssl-libs","purl":"pkg:rpm/redhat/openssl-libs","source":"RHSA-2026:77396"},{"ecosystem":"Red Hat:enterprise_linux:9::baseos","fixed":["1:3.5.8-2.el9_8"],"introduced":["0"],"last_affected":[],"package":"openssl-libs-debuginfo","purl":"pkg:rpm/redhat/openssl-libs-debuginfo","source":"RHSA-2026:77396"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:0.7.0-1.1.hum1"],"introduced":["0"],"last_affected":[],"package":"chunkah","purl":"pkg:rpm/redhat/chunkah","source":"RHSA-2026:73496"},{"ecosystem":"Rocky Linux:10","fixed":["1:3.5.8-2.el10_2"],"introduced":["0"],"last_affected":[],"package":"openssl","purl":"pkg:rpm/rocky-linux/openssl?distro=rocky-linux-10\u0026epoch=1","source":"RLSA-2026:76918"},{"ecosystem":"Rocky Linux:8","fixed":["1:1.0.2o-4.el8_10.4"],"introduced":["0"],"last_affected":[],"package":"compat-openssl10","purl":"pkg:rpm/rocky-linux/compat-openssl10?distro=rocky-linux-8\u0026epoch=1","source":"RLSA-2026:80510"},{"ecosystem":"Rocky Linux:9","fixed":["1:3.5.8-2.el9_8"],"introduced":["0"],"last_affected":[],"package":"openssl","purl":"pkg:rpm/rocky-linux/openssl?distro=rocky-linux-9\u0026epoch=1","source":"RLSA-2026:77396"},{"ecosystem":"SUSE:Linux Enterprise Live Patching 15 SP6","fixed":["0.7-150600.13.22.1"],"introduced":["0"],"last_affected":[],"package":"openssl-3-livepatches","purl":"pkg:rpm/suse/openssl-3-livepatches\u0026distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP6","source":"SUSE-SU-2026:4418-1"},{"ecosystem":"SUSE:Linux Enterprise Live Patching 15 SP7","fixed":["0.7-150700.16.15.1"],"introduced":["0"],"last_affected":[],"package":"openssl-3-livepatches","purl":"pkg:rpm/suse/openssl-3-livepatches\u0026distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP7","source":"SUSE-SU-2026:4560-1"}],"prev":{"headline":"WordPress Gallery PhotoBlocks plugin \u003c= 1.3.4 - Cross Site Scripting (XSS) vulnerability","id":"CVE-2026-84781"},"products":["OpenSSL"],"published":"2026-09-29","related":[{"cvss_score":10,"headline":"Null dereference in n/a","id":"CVE-2009-3245","kev_date_added":null,"published":"2010-03-05"},{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-2006-3738","kev_date_added":null,"published":"2006-09-28"},{"cvss_score":9.8,"headline":"Untrusted Sender DN Used as Format String in CMP Response Validation","id":"CVE-2026-63073","kev_date_added":null,"published":"2026-08-25"},{"cvss_score":9.8,"headline":"Use after free in n/a","id":"CVE-2016-6309","kev_date_added":null,"published":"2016-09-26"},{"cvss_score":9.8,"headline":"Integer overflow in n/a","id":"CVE-2016-0799","kev_date_added":null,"published":"2016-03-03"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2016-2842","kev_date_added":null,"published":"2016-03-03"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2003-0545","kev_date_added":null,"published":"2003-10-01"}],"sources":[{"class":"attribution","licence":"MIT","name":"AlmaLinux","prefix":"ALSA"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"class":"attribution","licence":"BSD","name":"Rocky Linux","prefix":"RLSA"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"SUSE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-29","vendors":["OpenSSL"]},"summary":"Attackers can trigger DTLS retransmission bugs to disclose heap memory or cause denial of service in applications using OpenSSL.","url":"https://insights.sbomify.com/CVE-2026-84782/"}