{"answers":{"affected":"2 open source packages ship an affected version, including authlib. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-114615 exists.","fix":"Upgrade authlib to 1.9.0 or later.","what":"CVE-2026-114615 is a high-severity vulnerability in authlib, published on 22 Oct 2026."},"fix_prompt":"Check this codebase for CVE-2026-114615 and fix it if it is affected.\n\nWhat it is: CVE-2026-114615 is a high-severity vulnerability in authlib, published on 22 Oct 2026. \nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-114615 exists.\n\nAffected packages and fixed versions:\n- authlib (PyPI): affected from 1.3.1; fixed in 1.9.0\n- authlib (PyPI): affected from 1.3.1; fixed in 1.9.0\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-2026-114615/ (Markdown: https://insights.sbomify.com/CVE-2026-114615/index.md)","id":"CVE-2026-114615","markdown":"https://insights.sbomify.com/CVE-2026-114615/index.md","name":"CVE-2026-114615","record":{"aliases":["DEBIAN-CVE-2026-114615","ECHO-47bf-b555-f683","GHSA-7vr2-2fgp-9w7p","MINI-fcx9-3vf9-f9qm","UBUNTU-CVE-2026-114615"],"analysis":null,"analysis_generated_by":null,"assigner":"GitHub_M","cpe":[{"product":"authlib","vendor":"authlib"}],"cvss":{"score":7.4,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-347","name":"Improper Verification of Cryptographic Signature"},{"id":"CWE-184","name":"Incomplete List of Disallowed Inputs"}],"description":"Authlib is a Python library which builds OAuth and OpenID Connect servers. From 1.3.1 until 1.9.0, OctKey.import_key() checks asymmetric-key markers only at byte zero while Authlib's PEM loaders accept leading whitespace, comments, or a byte-order mark. In deployments that use the documented mixed algorithm registry and already configure verification with PEM or certificate bytes containing such a prefix, an unauthenticated attacker who knows those same public-key bytes can use them as an HMAC secret and forge HS256 tokens with arbitrary identity or authorization claims. This is a bypass of the remediation for CVE-2024-37568. The module-level jwt object reaches OctKey.import_key() in authlib/jose/rfc7518/oct_key.py, where POSSIBLE_UNSAFE_KEYS fails to identify prefixed asymmetric key material. This issue is fixed in version 1.9.0.","ecosystems":["PyPI"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Authlib incomplete algorithm-confusion fix permits HMAC forgery with prefixed public keys","id":"CVE-2026-114615","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":null,"year":"2026"},"n_packages":2,"n_references":4,"next":{"headline":"Authlib accepts an empty HMAC key, allowing JWS/JWT signature forgery (HS256/HS384/HS512)","id":"CVE-2026-114616"},"packages":[{"ecosystem":"PyPI","fixed":["1.9.0"],"introduced":["1.3.1"],"last_affected":[],"package":"authlib","purl":null,"source":"GHSA-7vr2-2fgp-9w7p"},{"ecosystem":"PyPI","fixed":["1.9.0"],"introduced":["1.3.1"],"last_affected":[],"package":"authlib","purl":"pkg:pypi/authlib","source":"GHSA-7vr2-2fgp-9w7p"}],"prev":{"headline":"Authlib: is_secure_transport() loopback exemption can be bypassed with a userinfo component, allowing cleartext-HTTP URLs to non-loopback hosts","id":"CVE-2026-114614"},"products":["authlib"],"published":"2026-10-22","related":[{"cvss_score":9.1,"headline":"Authlib JWS JWK Header Injection: Signature Verification Bypass","id":"CVE-2026-27962","kev_date_added":null,"published":"2026-03-16"},{"cvss_score":8.3,"headline":"Authlib Vulnerable to JWE RSA1_5 Bleichenbacher Padding Oracle","id":"CVE-2026-28490","kev_date_added":null,"published":"2026-03-16"},{"cvss_score":8.2,"headline":"Authlib: Fail-Open Cryptographic Verification in OIDC Hash Binding","id":"CVE-2026-28498","kev_date_added":null,"published":"2026-03-16"},{"cvss_score":7.7,"headline":"Authlib: Setting `alg: none` and a blank signature appears to bypass signature verification","id":"CVE-2026-28802","kev_date_added":null,"published":"2026-03-06"},{"cvss_score":7.5,"headline":"Authlib is vulnerable to Denial of Service via Oversized JOSE Segments","id":"CVE-2025-61920","kev_date_added":null,"published":"2025-10-10"},{"cvss_score":7.5,"headline":"Authlib: JWS/JWT accepts unknown crit headers (RFC violation → possible authz bypass)","id":"CVE-2025-59420","kev_date_added":null,"published":"2025-09-22"},{"cvss_score":7.5,"headline":"Authlib has algorithm confusion with asymmetric public keys","id":"CVE-2024-37568","kev_date_added":null,"published":"2024-06-09"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"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":"2026-10-29","vendors":["authlib"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-114615/"}