{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-58055 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-58055 is a medium-severity vulnerability in nghttp2, published on 28 Jun 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-2026-58055 and fix it if it is affected.\n\nWhat it is: CVE-2026-58055 is a medium-severity vulnerability in nghttp2, published on 28 Jun 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-2026-58055 in the wild and no public exploit code.\n\nAffected product: nghttp2. 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-2026-58055/ (Markdown: https://insights.sbomify.com/CVE-2026-58055/index.md)","id":"CVE-2026-58055","markdown":"https://insights.sbomify.com/CVE-2026-58055/index.md","name":"CVE-2026-58055","record":{"aliases":["ALPINE-CVE-2026-58055","ALSA-2026:54650","ALSA-2026:54662","ALSA-2026:55804","AZL-91451","BELL-CVE-2026-58055","CLSA-2026-1787308423","CLSA-2026-1787754280","DEBIAN-CVE-2026-58055","ECHO-401a-73df-0d29","GHSA-xrr7-82jr-v58x","JLSEC-2026-1157","MGASA-2026-0309","MINI-wgg3-56h4-pc44","OESA-2026-2977","OESA-2026-2978","OESA-2026-2979","OESA-2026-2980","RHSA-2026:35454","RHSA-2026:52414","RHSA-2026:54650","RHSA-2026:54662","RHSA-2026:55804","RLSA-2026:54650","RLSA-2026:54662","RLSA-2026:55804","ROOT-OS-DEBIAN-12-CVE-2026-58055","ROOT-OS-DEBIAN-13-CVE-2026-58055","SUSE-SU-2026:22594-1","SUSE-SU-2026:22630-1","SUSE-SU-2026:22707-1","SUSE-SU-2026:22893-1","SUSE-SU-2026:2883-1","SUSE-SU-2026:3153-1","SUSE-SU-2026:3154-1","SUSE-SU-2026:4029-1","UBUNTU-CVE-2026-58055","USN-8495-1","openSUSE-SU-2026:11156-1","openSUSE-SU-2026:21302-1"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["data_read","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"HTTP/2 proxy server","requires_auth":"none","summary":"Attackers can exploit HTTP request smuggling in nghttpx proxy to poison response queues and access or modify data across clients.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[{"product":"nghttp2","vendor":"nghttp2"}],"cvss":{"score":6.3,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:L/SA:N","version":"4.0"},"cwes":[{"id":"CWE-444","name":"Inconsistent Interpretation of HTTP Requests"}],"description":"nghttp2's nghttpx proxy through 1.69.0 forwards an HTTP/1.1 Upgrade request that also carries a Content-Length header and body onto reusable keep-alive backend connections, re-adding the Upgrade and Connection headers while passing Content-Length verbatim. A backend that resolves the resulting ambiguous message in the attacker's favor enables HTTP request/response smuggling and cross-client response-queue poisoning.","ecosystems":["AlmaLinux:10","AlmaLinux:8","AlmaLinux:9","Red Hat:enterprise_linux:10.2","Red Hat:enterprise_linux:8::baseos","Red Hat:enterprise_linux:8::crb","Red Hat:enterprise_linux:9::baseos","Red Hat:enterprise_linux:9::crb","Red Hat:hummingbird:1","Rocky Linux:10","Rocky Linux:8","Rocky Linux:9","SUSE:Linux Enterprise Micro 5.3","SUSE:Linux Enterprise Micro 5.4","SUSE:Linux Enterprise Micro 5.5","SUSE:Linux Enterprise Module for Basesystem 15 SP7","SUSE:Linux Enterprise Server 16.0","SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5","SUSE:Linux Enterprise Server for SAP applications 16.0","SUSE:Linux Micro 6.0","SUSE:Linux Micro 6.1","SUSE:Linux Micro 6.2","openSUSE:Leap 16.0","openSUSE:Tumbleweed"],"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":"nghttp2 nghttpx - HTTP Request/Response Smuggling via Upgrade Request with Content-Length","id":"CVE-2026-58055","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"other","year":"2026"},"n_packages":61,"n_references":3,"next":{"headline":"RustDesk - FileTransfer Session Authorization Scope Bypass","id":"CVE-2026-58056"},"packages":[{"ecosystem":"AlmaLinux:10","fixed":["1.68.0-3.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"libnghttp2","purl":"pkg:rpm/almalinux/libnghttp2","source":"ALSA-2026:54650"},{"ecosystem":"AlmaLinux:10","fixed":["1.68.0-3.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"libnghttp2-devel","purl":"pkg:rpm/almalinux/libnghttp2-devel","source":"ALSA-2026:54650"},{"ecosystem":"AlmaLinux:10","fixed":["1.68.0-3.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"nghttp2","purl":"pkg:rpm/almalinux/nghttp2","source":"ALSA-2026:54650"},{"ecosystem":"AlmaLinux:8","fixed":["1.33.0-6.el8_10.3"],"introduced":["0"],"last_affected":[],"package":"libnghttp2","purl":"pkg:rpm/almalinux/libnghttp2","source":"ALSA-2026:55804"},{"ecosystem":"AlmaLinux:8","fixed":["1.33.0-6.el8_10.3"],"introduced":["0"],"last_affected":[],"package":"libnghttp2-devel","purl":"pkg:rpm/almalinux/libnghttp2-devel","source":"ALSA-2026:55804"},{"ecosystem":"AlmaLinux:8","fixed":["1.33.0-6.el8_10.3"],"introduced":["0"],"last_affected":[],"package":"nghttp2","purl":"pkg:rpm/almalinux/nghttp2","source":"ALSA-2026:55804"},{"ecosystem":"AlmaLinux:9","fixed":["1.43.0-6.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"libnghttp2","purl":"pkg:rpm/almalinux/libnghttp2","source":"ALSA-2026:54662"},{"ecosystem":"AlmaLinux:9","fixed":["1.43.0-6.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"libnghttp2-devel","purl":"pkg:rpm/almalinux/libnghttp2-devel","source":"ALSA-2026:54662"},{"ecosystem":"AlmaLinux:9","fixed":["1.43.0-6.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"nghttp2","purl":"pkg:rpm/almalinux/nghttp2","source":"ALSA-2026:54662"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:1.68.0-3.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"libnghttp2","purl":"pkg:rpm/redhat/libnghttp2","source":"RHSA-2026:54650"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:1.68.0-3.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"libnghttp2-debuginfo","purl":"pkg:rpm/redhat/libnghttp2-debuginfo","source":"RHSA-2026:54650"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:1.68.0-3.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"libnghttp2-devel","purl":"pkg:rpm/redhat/libnghttp2-devel","source":"RHSA-2026:54650"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:1.68.0-3.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"nghttp2","purl":"pkg:rpm/redhat/nghttp2","source":"RHSA-2026:54650"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:1.68.0-3.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"nghttp2-debuginfo","purl":"pkg:rpm/redhat/nghttp2-debuginfo","source":"RHSA-2026:54650"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:1.68.0-3.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"nghttp2-debugsource","purl":"pkg:rpm/redhat/nghttp2-debugsource","source":"RHSA-2026:54650"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:1.33.0-6.el8_10.3"],"introduced":["0"],"last_affected":[],"package":"libnghttp2","purl":"pkg:rpm/redhat/libnghttp2","source":"RHSA-2026:55804"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:1.33.0-6.el8_10.3"],"introduced":["0"],"last_affected":[],"package":"libnghttp2-debuginfo","purl":"pkg:rpm/redhat/libnghttp2-debuginfo","source":"RHSA-2026:55804"},{"ecosystem":"Red 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Hat:enterprise_linux:8::crb","fixed":["0:1.33.0-6.el8_10.3"],"introduced":["0"],"last_affected":[],"package":"libnghttp2-devel","purl":"pkg:rpm/redhat/libnghttp2-devel","source":"RHSA-2026:55804"},{"ecosystem":"Red Hat:enterprise_linux:8::crb","fixed":["0:1.33.0-6.el8_10.3"],"introduced":["0"],"last_affected":[],"package":"nghttp2","purl":"pkg:rpm/redhat/nghttp2","source":"RHSA-2026:55804"},{"ecosystem":"Red Hat:enterprise_linux:8::crb","fixed":["0:1.33.0-6.el8_10.3"],"introduced":["0"],"last_affected":[],"package":"nghttp2-debuginfo","purl":"pkg:rpm/redhat/nghttp2-debuginfo","source":"RHSA-2026:55804"},{"ecosystem":"Red Hat:enterprise_linux:8::crb","fixed":["0:1.33.0-6.el8_10.3"],"introduced":["0"],"last_affected":[],"package":"nghttp2-debugsource","purl":"pkg:rpm/redhat/nghttp2-debugsource","source":"RHSA-2026:55804"},{"ecosystem":"Red Hat:enterprise_linux:9::baseos","fixed":["0:1.43.0-6.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"libnghttp2","purl":"pkg:rpm/redhat/libnghttp2","source":"RHSA-2026:54662"},{"ecosystem":"Red Hat:enterprise_linux:9::baseos","fixed":["0:1.43.0-6.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"libnghttp2-debuginfo","purl":"pkg:rpm/redhat/libnghttp2-debuginfo","source":"RHSA-2026:54662"},{"ecosystem":"Red Hat:enterprise_linux:9::baseos","fixed":["0:1.43.0-6.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"nghttp2","purl":"pkg:rpm/redhat/nghttp2","source":"RHSA-2026:54662"},{"ecosystem":"Red Hat:enterprise_linux:9::baseos","fixed":["0:1.43.0-6.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"nghttp2-debuginfo","purl":"pkg:rpm/redhat/nghttp2-debuginfo","source":"RHSA-2026:54662"},{"ecosystem":"Red Hat:enterprise_linux:9::baseos","fixed":["0:1.43.0-6.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"nghttp2-debugsource","purl":"pkg:rpm/redhat/nghttp2-debugsource","source":"RHSA-2026:54662"},{"ecosystem":"Red Hat:enterprise_linux:9::crb","fixed":["0:1.43.0-6.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"libnghttp2-debuginfo","purl":"pkg:rpm/redhat/libnghttp2-debuginfo","source":"RHSA-2026:54662"},{"ecosystem":"Red Hat:enterprise_linux:9::crb","fixed":["0:1.43.0-6.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"libnghttp2-devel","purl":"pkg:rpm/redhat/libnghttp2-devel","source":"RHSA-2026:54662"},{"ecosystem":"Red Hat:enterprise_linux:9::crb","fixed":["0:1.43.0-6.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"nghttp2","purl":"pkg:rpm/redhat/nghttp2","source":"RHSA-2026:54662"},{"ecosystem":"Red Hat:enterprise_linux:9::crb","fixed":["0:1.43.0-6.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"nghttp2-debuginfo","purl":"pkg:rpm/redhat/nghttp2-debuginfo","source":"RHSA-2026:54662"},{"ecosystem":"Red Hat:enterprise_linux:9::crb","fixed":["0:1.43.0-6.el9_8.2"],"introduced":["0"],"last_affected":[],"package":"nghttp2-debugsource","purl":"pkg:rpm/redhat/nghttp2-debugsource","source":"RHSA-2026:54662"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:1.69.0-3.1.hum1"],"introduced":["0"],"last_affected":[],"package":"libnghttp2","purl":"pkg:rpm/redhat/libnghttp2","source":"RHSA-2026:35454"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:1.69.0-5.hum1"],"introduced":["0"],"last_affected":[],"package":"libnghttp2","purl":"pkg:rpm/redhat/libnghttp2","source":"RHSA-2026:52414"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:1.69.0-3.1.hum1"],"introduced":["0"],"last_affected":[],"package":"libnghttp2-devel","purl":"pkg:rpm/redhat/libnghttp2-devel","source":"RHSA-2026:35454"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:1.69.0-5.hum1"],"introduced":["0"],"last_affected":[],"package":"libnghttp2-devel","purl":"pkg:rpm/redhat/libnghttp2-devel","source":"RHSA-2026:52414"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:1.69.0-3.1.hum1"],"introduced":["0"],"last_affected":[],"package":"mingw32-libnghttp2","purl":"pkg:rpm/redhat/mingw32-libnghttp2","source":"RHSA-2026:35454"}],"prev":{"headline":"This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.","id":"CVE-2026-58054"},"products":["nghttp2"],"published":"2026-06-28","related":[{"cvss_score":7.5,"headline":"nghttp2 Denial of service: Assertion failure due to the missing state validation","id":"CVE-2026-27135","kev_date_added":null,"published":"2026-03-18"}],"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":"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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-06-29","vendors":["nghttp2"]},"summary":"Attackers can exploit HTTP request smuggling in nghttpx proxy to poison response queues and access or modify data across clients.","url":"https://insights.sbomify.com/CVE-2026-58055/"}