{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-78002 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-78002 is a high-severity memory corruption vulnerability in Red Hat Enterprise Linux 10, published on 27 Aug 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-2026-78002 and fix it if it is affected.\n\nWhat it is: CVE-2026-78002 is a high-severity memory corruption vulnerability in Red Hat Enterprise Linux 10, published on 27 Aug 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-2026-78002 in the wild and no public exploit code.\n\nAffected product: Red Hat Enterprise Linux 10. 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-2026-78002/ (Markdown: https://insights.sbomify.com/CVE-2026-78002/index.md)","id":"CVE-2026-78002","markdown":"https://insights.sbomify.com/CVE-2026-78002/index.md","name":"CVE-2026-78002","record":{"aliases":["ALSA-2026:69540","ALSA-2026:69541","AZL-98400","CLSA-2026-1790795134","CLSA-2026-1790809774","CLSA-2026-1791277281","CLSA-2026-1791277470","CLSA-2026-1791371082","CLSA-2026-1791918528","CLSA-2026-1791954698","CLSA-2026-1791960930","CLSA-2026-1792399166","DEBIAN-CVE-2026-78002","OESA-2026-3838","OESA-2026-3839","OESA-2026-3840","OESA-2026-3841","OESA-2026-3934","RHSA-2026:69540","RHSA-2026:69541","RHSA-2026:81321","RLSA-2026:69540","RLSA-2026:69541","UBUNTU-CVE-2026-78002","USN-8786-1"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Rsyslog logging server","requires_auth":"none","summary":"An unauthenticated remote attacker can cause a denial of service in rsyslog by triggering a heap buffer overflow via crafted syslog messages.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-131","name":"Incorrect Calculation of Buffer Size"}],"description":"A flaw was found in rsyslog. An unauthenticated remote attacker can trigger a heap buffer overflow in the RainerScript `replace()` function by sending specially crafted syslog messages. This vulnerability arises from an incorrect buffer size calculation during string replacement, causing memory corruption. Successful exploitation can lead to a denial of service (DoS) for the affected system.","ecosystems":["AlmaLinux:10","AlmaLinux:9","Red Hat:enterprise_linux:10.2","Red Hat:enterprise_linux:9::appstream","Red Hat:enterprise_linux_eus:10.0","Rocky Linux:10","Rocky Linux:9"],"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":"Rsyslog: rsyslog: denial of service via heap buffer overflow in rainerscript replace() function","id":"CVE-2026-78002","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2026"},"n_packages":145,"n_references":12,"next":{"headline":"Mailgun for WordPress \u003c= 2.2.0 - Unauthenticated Server-Side Request Forgery (SSRF) via 'addresses' Array Keys","id":"CVE-2026-78003"},"packages":[{"ecosystem":"AlmaLinux:10","fixed":["8.2510.0-5.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog","purl":"pkg:rpm/almalinux/rsyslog","source":"ALSA-2026:69541"},{"ecosystem":"AlmaLinux:10","fixed":["8.2510.0-5.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog-crypto","purl":"pkg:rpm/almalinux/rsyslog-crypto","source":"ALSA-2026:69541"},{"ecosystem":"AlmaLinux:10","fixed":["8.2510.0-5.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog-doc","purl":"pkg:rpm/almalinux/rsyslog-doc","source":"ALSA-2026:69541"},{"ecosystem":"AlmaLinux:10","fixed":["8.2510.0-5.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog-elasticsearch","purl":"pkg:rpm/almalinux/rsyslog-elasticsearch","source":"ALSA-2026:69541"},{"ecosystem":"AlmaLinux:10","fixed":["8.2510.0-5.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog-gnutls","purl":"pkg:rpm/almalinux/rsyslog-gnutls","source":"ALSA-2026:69541"},{"ecosystem":"AlmaLinux:10","fixed":["8.2510.0-5.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog-gssapi","purl":"pkg:rpm/almalinux/rsyslog-gssapi","source":"ALSA-2026:69541"},{"ecosystem":"AlmaLinux:10","fixed":["8.2510.0-5.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog-kafka","purl":"pkg:rpm/almalinux/rsyslog-kafka","source":"ALSA-2026:69541"},{"ecosystem":"AlmaLinux:10","fixed":["8.2510.0-5.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog-mmaudit","purl":"pkg:rpm/almalinux/rsyslog-mmaudit","source":"ALSA-2026:69541"},{"ecosystem":"AlmaLinux:10","fixed":["8.2510.0-5.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog-mmfields","purl":"pkg:rpm/almalinux/rsyslog-mmfields","source":"ALSA-2026:69541"},{"ecosystem":"AlmaLinux:10","fixed":["8.2510.0-5.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog-mmjsonparse","purl":"pkg:rpm/almalinux/rsyslog-mmjsonparse","source":"ALSA-2026:69541"},{"ecosystem":"AlmaLinux:10","fixed":["8.2510.0-5.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog-mmkubernetes","purl":"pkg:rpm/almalinux/rsyslog-mmkubernetes","source":"ALSA-2026:69541"},{"ecosystem":"AlmaLinux:10","fixed":["8.2510.0-5.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog-mmnormalize","purl":"pkg:rpm/almalinux/rsyslog-mmnormalize","source":"ALSA-2026:69541"},{"ecosystem":"AlmaLinux:10","fixed":["8.2510.0-5.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog-mmsnmptrapd","purl":"pkg:rpm/almalinux/rsyslog-mmsnmptrapd","source":"ALSA-2026:69541"},{"ecosystem":"AlmaLinux:10","fixed":["8.2510.0-5.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog-mysql","purl":"pkg:rpm/almalinux/rsyslog-mysql","source":"ALSA-2026:69541"},{"ecosystem":"AlmaLinux:10","fixed":["8.2510.0-5.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog-omamqp1","purl":"pkg:rpm/almalinux/rsyslog-omamqp1","source":"ALSA-2026:69541"},{"ecosystem":"AlmaLinux:10","fixed":["8.2510.0-5.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog-openssl","purl":"pkg:rpm/almalinux/rsyslog-openssl","source":"ALSA-2026:69541"},{"ecosystem":"AlmaLinux:10","fixed":["8.2510.0-5.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog-pgsql","purl":"pkg:rpm/almalinux/rsyslog-pgsql","source":"ALSA-2026:69541"},{"ecosystem":"AlmaLinux:10","fixed":["8.2510.0-5.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog-relp","purl":"pkg:rpm/almalinux/rsyslog-relp","source":"ALSA-2026:69541"},{"ecosystem":"AlmaLinux:10","fixed":["8.2510.0-5.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog-snmp","purl":"pkg:rpm/almalinux/rsyslog-snmp","source":"ALSA-2026:69541"},{"ecosystem":"AlmaLinux:10","fixed":["8.2510.0-5.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog-udpspoof","purl":"pkg:rpm/almalinux/rsyslog-udpspoof","source":"ALSA-2026:69541"},{"ecosystem":"AlmaLinux:9","fixed":["8.2510.0-2.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog","purl":"pkg:rpm/almalinux/rsyslog","source":"ALSA-2026:69540"},{"ecosystem":"AlmaLinux:9","fixed":["8.2510.0-2.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog-crypto","purl":"pkg:rpm/almalinux/rsyslog-crypto","source":"ALSA-2026:69540"},{"ecosystem":"AlmaLinux:9","fixed":["8.2510.0-2.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog-doc","purl":"pkg:rpm/almalinux/rsyslog-doc","source":"ALSA-2026:69540"},{"ecosystem":"AlmaLinux:9","fixed":["8.2510.0-2.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog-elasticsearch","purl":"pkg:rpm/almalinux/rsyslog-elasticsearch","source":"ALSA-2026:69540"},{"ecosystem":"AlmaLinux:9","fixed":["8.2510.0-2.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog-gnutls","purl":"pkg:rpm/almalinux/rsyslog-gnutls","source":"ALSA-2026:69540"},{"ecosystem":"AlmaLinux:9","fixed":["8.2510.0-2.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog-gssapi","purl":"pkg:rpm/almalinux/rsyslog-gssapi","source":"ALSA-2026:69540"},{"ecosystem":"AlmaLinux:9","fixed":["8.2510.0-2.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog-kafka","purl":"pkg:rpm/almalinux/rsyslog-kafka","source":"ALSA-2026:69540"},{"ecosystem":"AlmaLinux:9","fixed":["8.2510.0-2.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog-logrotate","purl":"pkg:rpm/almalinux/rsyslog-logrotate","source":"ALSA-2026:69540"},{"ecosystem":"AlmaLinux:9","fixed":["8.2510.0-2.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog-mmaudit","purl":"pkg:rpm/almalinux/rsyslog-mmaudit","source":"ALSA-2026:69540"},{"ecosystem":"AlmaLinux:9","fixed":["8.2510.0-2.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog-mmfields","purl":"pkg:rpm/almalinux/rsyslog-mmfields","source":"ALSA-2026:69540"},{"ecosystem":"AlmaLinux:9","fixed":["8.2510.0-2.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog-mmjsonparse","purl":"pkg:rpm/almalinux/rsyslog-mmjsonparse","source":"ALSA-2026:69540"},{"ecosystem":"AlmaLinux:9","fixed":["8.2510.0-2.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog-mmkubernetes","purl":"pkg:rpm/almalinux/rsyslog-mmkubernetes","source":"ALSA-2026:69540"},{"ecosystem":"AlmaLinux:9","fixed":["8.2510.0-2.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog-mmnormalize","purl":"pkg:rpm/almalinux/rsyslog-mmnormalize","source":"ALSA-2026:69540"},{"ecosystem":"AlmaLinux:9","fixed":["8.2510.0-2.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog-mmsnmptrapd","purl":"pkg:rpm/almalinux/rsyslog-mmsnmptrapd","source":"ALSA-2026:69540"},{"ecosystem":"AlmaLinux:9","fixed":["8.2510.0-2.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog-mysql","purl":"pkg:rpm/almalinux/rsyslog-mysql","source":"ALSA-2026:69540"},{"ecosystem":"AlmaLinux:9","fixed":["8.2510.0-2.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog-omamqp1","purl":"pkg:rpm/almalinux/rsyslog-omamqp1","source":"ALSA-2026:69540"},{"ecosystem":"AlmaLinux:9","fixed":["8.2510.0-2.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog-openssl","purl":"pkg:rpm/almalinux/rsyslog-openssl","source":"ALSA-2026:69540"},{"ecosystem":"AlmaLinux:9","fixed":["8.2510.0-2.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog-pgsql","purl":"pkg:rpm/almalinux/rsyslog-pgsql","source":"ALSA-2026:69540"},{"ecosystem":"AlmaLinux:9","fixed":["8.2510.0-2.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog-relp","purl":"pkg:rpm/almalinux/rsyslog-relp","source":"ALSA-2026:69540"},{"ecosystem":"AlmaLinux:9","fixed":["8.2510.0-2.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"rsyslog-snmp","purl":"pkg:rpm/almalinux/rsyslog-snmp","source":"ALSA-2026:69540"}],"prev":{"headline":"Cross-site scripting in Post and Page Builder by BoldGrid – Visual Drag and Drop Editor","id":"CVE-2026-78001"},"products":["Red Hat Enterprise Linux 10","Red Hat Enterprise Linux 10.0 Extended Update Support","Red Hat Enterprise Linux 6","Red Hat Enterprise Linux 7","Red Hat Enterprise Linux 8","Red Hat Enterprise Linux 8.8 Telecommunications Update Service","Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions","Red Hat Enterprise Linux 9","Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions","Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions","Red Hat Enterprise Linux 9.6 Extended Update Support","Red Hat Update Infrastructure 5"],"published":"2026-08-27","related":[],"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":"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":"2026-10-26","vendors":["Red Hat"]},"summary":"An unauthenticated remote attacker can cause a denial of service in rsyslog by triggering a heap buffer overflow via crafted syslog messages.","url":"https://insights.sbomify.com/CVE-2026-78002/"}