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authlib has 10 CVEs on record between 2025 and 2026. The busiest recent month was March 2026 with 4. The median CVSS is 6.5 (medium), with 2 rated critical. None have a confirmed exploitation report.

CVEs per month

Last 12 months, by publish date

101112010203040506070809
Exploited share
0% vs 1% corpus
Median CVSS
6.5
Publish → KEV
Last 90 days
0 prev 3

Products

  • authlib 10
10
Total CVEs
2
Critical
0
CISA KEV
0
Exploited

authlib vulnerabilities

CVEs affecting authlib, newest first. Open any entry for full detail, references, and exploit status.

10 CVEsRSS

CVE-2026-41479Medium· 5.4
3mo ago

Authlib OAuth 2.0 has Open Redirect in Authorization API that allows attacker-controlled redirect_uri through unsupported response_type

Authlib OAuth 2.0 has Open Redirect in Authorization API that allows attacker-controlled redirect_uri through unsupported response_type

Sunlitauthlib · authlibEPSS 0.18%via GHSA
CVE-2026-44681Medium· 6.1
4mo ago

Authlib OIDC Implicit/Hybrid Authorization Vulnerable to Open Redirect

Authlib OIDC Implicit/Hybrid Authorization Vulnerable to Open Redirect

Sunlitauthlib · authlibEPSS 0.25%via OSV
CVE-2026-41425Medium· 5.4
5mo ago

Authlib: Cross-site request forging when using cache

Authlib: Cross-site request forging when using cache

Sunlitauthlib · authlibEPSS 0.11%via OSV
CVE-2026-28490High
6mo ago

Authlib Vulnerable to JWE RSA1_5 Bleichenbacher Padding Oracle

Authlib Vulnerable to JWE RSA1_5 Bleichenbacher Padding Oracle

Twilightauthlib · authlibEPSS 0.14%via OSV
CVE-2026-28498High· 7.5PoC
6mo ago

Authlib is a Python library which builds OAuth and OpenID Connect servers

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to version 1.6.9, a library-level vulnerability was identified in the Authlib Python library concerning the validation of OpenID Connect (OIDC) ID Tokens. S…

Midnightauthlib · authlibEPSS 0.23%via NVD
CVE-2026-27962Critical· 9.1PoC
6mo ago

Authlib is a Python library which builds OAuth and OpenID Connect servers

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to version 1.6.9, a JWK Header Injection vulnerability in authlib's JWS implementation allows an unauthenticated attacker to forge arbitrary JWT tokens that…

Abyssalauthlib · authlibEPSS 0.55%via NVD
CVE-2026-28802Critical· 9.8⚖ disputed
6mo ago

Authlib is a Python library which builds OAuth and OpenID Connect servers

Authlib is a Python library which builds OAuth and OpenID Connect servers. From version 1.6.5 to before version 1.6.7, previous tests involving passing a malicious JWT containing alg: none and an empty signature was passing the signature…

Midnightauthlib · authlibEPSS 0.43%via NVD
CVE-2025-68158Medium· 5.7
8mo ago

Authlib has 1-click Account Takeover vulnerability

Authlib has 1-click Account Takeover vulnerability

Sunlitauthlib · authlibEPSS 0.28%via OSV
CVE-2025-61920High· 7.5
11mo ago

Authlib is vulnerable to Denial of Service via Oversized JOSE Segments

Authlib is vulnerable to Denial of Service via Oversized JOSE Segments

Twilightauthlib · authlibEPSS 0.64%via OSV
CVE-2025-62706Medium· 6.5
11mo ago

Authlib : JWE zip=DEF decompression bomb enables DoS

Authlib : JWE zip=DEF decompression bomb enables DoS

Sunlitauthlib · authlibEPSS 0.43%via OSV
authlib vulnerabilities (CVEs) · VulnSea