{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-8927 exists.","fix":"Upgrade to a fixed version.","what":"CVE-2026-8927 is a critical vulnerability in Haxx Curl, published on 3 Jul 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-2026-8927 and fix it if it is affected.\n\nWhat it is: CVE-2026-8927 is a critical vulnerability in Haxx Curl, published on 3 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-8927 exists.\n\nAffected product: Haxx Curl. 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-2026-8927/ (Markdown: https://insights.sbomify.com/CVE-2026-8927/index.md)","id":"CVE-2026-8927","markdown":"https://insights.sbomify.com/CVE-2026-8927/index.md","name":"CVE-2026-8927","record":{"aliases":["ALPINE-CVE-2026-8927","ALSA-2026:55432","AZL-91788","AZL-91833","BELL-CVE-2026-8927","CLSA-2026-1784193045","CURL-CVE-2026-8927","DEBIAN-CVE-2026-8927","ECHO-5c3c-57c5-8fb2","GHSA-jr4f-4564-w3mr","JLSEC-2026-1216","MINI-vchr-vcfj-27qv","MINI-vhgp-9jxx-whqw","RHSA-2026:55432","RLSA-2026:55432","ROOT-OS-ALPINE-315-CVE-2026-8927","ROOT-OS-ALPINE-320-CVE-2026-8927","ROOT-OS-ALPINE-321-CVE-2026-8927","ROOT-OS-ALPINE-322-CVE-2026-8927","ROOT-OS-DEBIAN-11-CVE-2026-8927","ROOT-OS-DEBIAN-12-CVE-2026-8927","UBUNTU-CVE-2026-8927"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"libcurl HTTP library","requires_auth":"none","summary":"libcurl leaks proxy authentication headers between sequential transfers, exposing credentials to unintended proxies.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"curl","cpe":[{"product":"curl","vendor":"haxx"}],"cvss":{"score":9.1,"severity":"critical","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-294","name":"Authentication Bypass by Capture-replay"}],"description":"When reusing a libcurl handle for sequential transfers driven by\nenvironment-variable proxy configuration, libcurl fails to clear the proxy\nauthentication state between requests. Specifically, if the initial transfer\nauthenticates against `proxyA` using Digest auth, a subsequent transfer routed\nthrough `proxyB` erroneously leaks the `Proxy-Authorization:` header intended\nsolely for `proxyA`.","ecosystems":["AlmaLinux:10","Red Hat:enterprise_linux:10.2","Rocky Linux:10"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"env-set cross-proxy Digest auth state leak","id":"CVE-2026-8927","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"haxx:curl","products":["haxx:curl"],"type":"information_disclosure","year":"2026"},"n_packages":13,"n_references":3,"next":{"headline":"Critical RCE vulnerability in Disig Web Signer","id":"CVE-2026-8931"},"packages":[{"ecosystem":"AlmaLinux:10","fixed":["8.12.1-4.el10_2.4"],"introduced":["0"],"last_affected":[],"package":"curl","purl":"pkg:rpm/almalinux/curl","source":"ALSA-2026:55432"},{"ecosystem":"AlmaLinux:10","fixed":["8.12.1-4.el10_2.4"],"introduced":["0"],"last_affected":[],"package":"libcurl","purl":"pkg:rpm/almalinux/libcurl","source":"ALSA-2026:55432"},{"ecosystem":"AlmaLinux:10","fixed":["8.12.1-4.el10_2.4"],"introduced":["0"],"last_affected":[],"package":"libcurl-devel","purl":"pkg:rpm/almalinux/libcurl-devel","source":"ALSA-2026:55432"},{"ecosystem":"AlmaLinux:10","fixed":["8.12.1-4.el10_2.4"],"introduced":["0"],"last_affected":[],"package":"libcurl-minimal","purl":"pkg:rpm/almalinux/libcurl-minimal","source":"ALSA-2026:55432"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:8.12.1-4.el10_2.4"],"introduced":["0"],"last_affected":[],"package":"curl","purl":"pkg:rpm/redhat/curl","source":"RHSA-2026:55432"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:8.12.1-4.el10_2.4"],"introduced":["0"],"last_affected":[],"package":"curl-debuginfo","purl":"pkg:rpm/redhat/curl-debuginfo","source":"RHSA-2026:55432"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:8.12.1-4.el10_2.4"],"introduced":["0"],"last_affected":[],"package":"curl-debugsource","purl":"pkg:rpm/redhat/curl-debugsource","source":"RHSA-2026:55432"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:8.12.1-4.el10_2.4"],"introduced":["0"],"last_affected":[],"package":"libcurl","purl":"pkg:rpm/redhat/libcurl","source":"RHSA-2026:55432"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:8.12.1-4.el10_2.4"],"introduced":["0"],"last_affected":[],"package":"libcurl-debuginfo","purl":"pkg:rpm/redhat/libcurl-debuginfo","source":"RHSA-2026:55432"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:8.12.1-4.el10_2.4"],"introduced":["0"],"last_affected":[],"package":"libcurl-devel","purl":"pkg:rpm/redhat/libcurl-devel","source":"RHSA-2026:55432"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:8.12.1-4.el10_2.4"],"introduced":["0"],"last_affected":[],"package":"libcurl-minimal","purl":"pkg:rpm/redhat/libcurl-minimal","source":"RHSA-2026:55432"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:8.12.1-4.el10_2.4"],"introduced":["0"],"last_affected":[],"package":"libcurl-minimal-debuginfo","purl":"pkg:rpm/redhat/libcurl-minimal-debuginfo","source":"RHSA-2026:55432"},{"ecosystem":"Rocky Linux:10","fixed":["0:8.12.1-4.el10_2.4"],"introduced":["0"],"last_affected":[],"package":"curl","purl":"pkg:rpm/rocky-linux/curl?distro=rocky-linux-10\u0026epoch=0","source":"RLSA-2026:55432"}],"prev":{"headline":"password leak with netrc and user in URL","id":"CVE-2026-8926"},"products":["curl"],"published":"2026-07-03","related":[{"cvss_score":9.8,"headline":"Negotiate ambient user conn reuse","id":"CVE-2026-19931","kev_date_added":null,"published":"2026-09-06"},{"cvss_score":9.8,"headline":"HTTP/2 stream-dependency tree UAF","id":"CVE-2026-10536","kev_date_added":null,"published":"2026-07-03"},{"cvss_score":9.8,"headline":"cross-origin Digest auth state leak","id":"CVE-2026-11856","kev_date_added":null,"published":"2026-07-03"},{"cvss_score":9.8,"headline":"SASL double-free","id":"CVE-2026-8925","kev_date_added":null,"published":"2026-07-03"},{"cvss_score":9.8,"headline":"stale proxy password leak","id":"CVE-2026-9079","kev_date_added":null,"published":"2026-07-03"},{"cvss_score":9.8,"headline":"Code injection in curl","id":"CVE-2016-4606","kev_date_added":null,"published":"2020-02-21"},{"cvss_score":9.8,"headline":"Information disclosure in n/a","id":"CVE-2016-9953","kev_date_added":null,"published":"2018-03-12"}],"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":"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":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-09-15","vendors":["curl"]},"summary":"libcurl leaks proxy authentication headers between sequential transfers, exposing credentials to unintended proxies.","url":"https://insights.sbomify.com/CVE-2026-8927/"}