{"answers":{"affected":"2 open source packages ship an affected version, including nginx and nginx-gateway. It affects 2 products.","exploited":"There is no known exploitation of CVE-2026-27651 in the wild and no public exploit code.","fix":"Upgrade nginx to a fixed version for your release line: 1.28.3 or 1.29.7.","what":"CVE-2026-27651 is a high-severity vulnerability in F5 NGINX Open Source, published on 24 Mar 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-2026-27651 and fix it if it is affected.\n\nWhat it is: CVE-2026-27651 is a high-severity vulnerability in F5 NGINX Open Source, published on 24 Mar 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-2026-27651 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- nginx (Bitnami): affected from 0.5.15; fixed in 1.28.3, 1.29.7\n- nginx-gateway (Bitnami): affected from 0.5.15; fixed in 1.28.3, 1.29.7\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-2026-27651/ (Markdown: https://insights.sbomify.com/CVE-2026-27651/index.md)","id":"CVE-2026-27651","markdown":"https://insights.sbomify.com/CVE-2026-27651/index.md","name":"CVE-2026-27651","record":{"aliases":["ALPINE-CVE-2026-27651","AZL-80771","BELL-CVE-2026-27651","BIT-nginx-2026-27651","BIT-nginx-gateway-2026-27651","DEBIAN-CVE-2026-27651","ECHO-a09e-6ba8-3be0","GHSA-82w2-x7hf-5h8r","MINI-8g74-hv79-vmpg","MINI-ghjj-p693-crrw","MINI-p6rr-wm44-95fx","MINI-w59p-554p-455v","ROOT-OS-ALPINE-315-CVE-2026-27651","ROOT-OS-ALPINE-320-CVE-2026-27651","ROOT-OS-ALPINE-321-CVE-2026-27651","UBUNTU-CVE-2026-27651"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":true,"product_category":"NGINX mail module","requires_auth":"none","summary":"Attackers can crash NGINX worker processes via crafted requests when mail authentication with retry support is enabled.","user_interaction":"not_required","vuln_class":"null_dereference"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"f5","cpe":[{"product":"nginx_open_source","vendor":"f5"},{"product":"nginx_plus","vendor":"f5"}],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-476","name":"NULL Pointer Dereference"}],"description":"When the ngx_mail_auth_http_module module is enabled on NGINX Plus or NGINX Open Source, undisclosed requests can cause worker processes to terminate. This issue may occur when (1) CRAM-MD5 or APOP authentication is enabled, and (2) the authentication server permits retry by returning the Auth-Wait response header. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.","ecosystems":["Bitnami"],"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":"NGINX ngx_mail_auth_http_module vulnerability","id":"CVE-2026-27651","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":null,"products":[],"type":"null_dereference","year":"2026"},"n_packages":2,"n_references":1,"next":{"headline":"CloudCharge cloudcharge.se Insufficient Session Expiration","id":"CVE-2026-27652"},"packages":[{"ecosystem":"Bitnami","fixed":["1.28.3","1.29.7"],"introduced":["0.5.15","1.29.0"],"last_affected":[],"package":"nginx","purl":"pkg:bitnami/nginx","source":"BIT-nginx-2026-27651"},{"ecosystem":"Bitnami","fixed":["1.28.3","1.29.7"],"introduced":["0.5.15","1.29.0"],"last_affected":[],"package":"nginx-gateway","purl":"pkg:bitnami/nginx-gateway","source":"BIT-nginx-gateway-2026-27651"}],"prev":{"headline":"Command injection in BUFFALO Wi-Fi router products","id":"CVE-2026-27650"},"products":["NGINX Open Source","NGINX Plus"],"published":"2026-03-24","related":[{"cvss_score":8.8,"headline":"NGINX ngx_http_dav_module vulnerability","id":"CVE-2026-27654","kev_date_added":null,"published":"2026-03-24"},{"cvss_score":8.5,"headline":"NGINX ngx_http_mp4_module vulnerability","id":"CVE-2026-27784","kev_date_added":null,"published":"2026-03-24"},{"cvss_score":8.5,"headline":"NGINX ngx_http_mp4_module vulnerability","id":"CVE-2026-32647","kev_date_added":null,"published":"2026-03-24"},{"cvss_score":7.5,"headline":"NGINX HTTP/3 QUIC vulnerability","id":"CVE-2024-24989","kev_date_added":null,"published":"2024-02-14"},{"cvss_score":7.5,"headline":"NGINX HTTP/3 QUIC vulnerability","id":"CVE-2024-24990","kev_date_added":null,"published":"2024-02-14"},{"cvss_score":6.5,"headline":"NGINX HTTP/3 QUIC vulnerability","id":"CVE-2024-32760","kev_date_added":null,"published":"2024-05-29"}],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"Bitnami","prefix":"BIT"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"2026-07-15","vendors":["F5"]},"summary":"Attackers can crash NGINX worker processes via crafted requests when mail authentication with retry support is enabled.","url":"https://insights.sbomify.com/CVE-2026-27651/"}