Authlib: Cross-site request forging when using cache
Priority MEDIUM 58CWE-352Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Tampering
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Partial Red Hat: 4 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-352.
Summary
Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to 1.6.11, there is no CSRF protection on the cache feature in authlib.integrations.starlette_client.OAuth. This vulnerability is fixed in 1.6.11.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00106 1st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial authlib (authlib): 1.6.11authlib (PyPI): 1.6.11Red Hat: 4 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| authlib | authlib | before 1.6.11 | 1.6.11 | Patch available | CNA |
| — | authlib (PyPI) | before 1.6.11 | 1.6.11 | Patch available | GHSA-jj8c-mmj3-mmgv |
- authlib Vendorauthlib Affected before 1.6.11 Fixed in 1.6.11 Patch available CNA
- authlib (PyPI) Vendor— Affected before 1.6.11 Fixed in 1.6.11 Patch available GHSA-jj8c-mmj3-mmgv
Remediation
- Fix · CNA authlib (authlib) Fixed in 1.6.11
- Fix · GHSA-jj8c-mmj3-mmgv authlib (PyPI) Fixed in 1.6.11 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Migration Toolkit for Applications 8 | Affected | No fix yet: Fix deferred |
| Red Hat Ansible Automation Platform 2 | Affected | No fix yet: Fix deferred |
| Red Hat Quay 3 | Affected | No fix yet: Fix deferred |
| Red Hat Satellite 6 | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-02 Threatist record created from CVE-2026-41425
- 2026-10-03 Alias added: GHSA-jj8c-mmj3-mmgv
References
More Authlib vulnerabilities
- TI-2026-22305 Authlib JWS JWK Header Injection: Signature Verification Bypass CVSS 3.1CRITICAL 9.1
- TI-2026-79518 Authlib fix bypass lets attackers forge HS256 tokens with PEM keys CVSS 3.1CRITICAL 9.1
- TI-2025-36973 Authlib: JWS/JWT accepts unknown crit headers (RFC violation → possible authz bypass) CVSS 3.1HIGH 7.5
- TI-2024-25068 lepture Authlib before 1.3.1 has algorithm confusion with asymmetric public keys. CVSS 3.1HIGH 7.5
- TI-2025-41738 Authlib: 1-click Account Takeover CVSS 3.1HIGH 8.8
- TI-2026-22761 Authlib: Fail-Open Cryptographic Verification in OIDC Hash Binding CVSS 4.0HIGH 8.2
Sources
- CVE-2026-41425 · CVE Program
- CVE-2026-41425 · NVD
- FIRST EPSS
- GHSA-jj8c-mmj3-mmgv · GitHub Advisory Database · CC BY 4.0
- CVE-2026-41425 · Red Hat security data · CC BY 4.0
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