Authlib is a Python library which builds OAuth and OpenID Connect servers. In versions 1.0.0 through 1.6.5, cache-backed state/request-token storage is not tied to the initiating user session, so CSRF is possible for any attacker that has a valid state (easily obtainable via an attacker-initiated authentication flow). When a cache is supplied to the OAuth client registry, FrameworkIntegration.set_state_data writes the entire state blob under _state_{app}_{state}, and get_state_data ignores the caller’s session altogether. This issue has been patched in version 1.6.6.
CVE-2025-68158
This medium-severity CVE scores 5.7 under NVD CVSS v3. EPSS exploit probability: 0.0%, top 92% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
A fix is available — apply it.
- CVSS v3
- 5.7
- EG Score
- 5.7(medium)
- EPSS
- 14.8%
- KEV
- Not listed
Published
January 8, 2026
Last Modified
March 30, 2026
References (4)
- security-advisories@githubhttps://github.com/authlib/authlib/commit/2808378611dd6fb2532b189a9087877d8f0c0489
- security-advisories@githubhttps://github.com/authlib/authlib/commit/7974f45e4d7492ab5f527577677f2770ce423228
- security-advisories@githubhttps://github.com/authlib/authlib/security/advisories/GHSA-fg6f-75jq-6523
- 134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/authlib/authlib/security/advisories/GHSA-fg6f-75jq-6523
Vendor Advisories for CVE-2025-68158(4)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
- RHSA-2026:28405Red Hat Product SecurityHigh
Red Hat Security Advisory: satellite/foreman-mcp-server-rhel9 container image available as a Technology Preview
- RHSA-2026:6568Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat Quay 3.15.4
- RHSA-2026:6567Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat Quay 3.16.3
- RHSA-2026:6497Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat Quay 3.16.3
Patch Availability(4)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | python3-authlib (1.3.0-1ubuntu0.1~esm1) @ noble | 2026-05-29 | ubuntu |
| redhat | quay/quay-rhel9:1775169226 | 2026-04-03 | redhat |
| redhat | quay/quay-rhel8:1775169219 | 2026-04-03 | redhat |
| redhat | quay/quay-rhel9:1775069491 | 2026-04-02 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(1 across 1 ecosystem)
PyPI(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| authlib | 1.0.0 ... 1.6.5 (19 versions) | 1.6.6 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Additional Vendor Advisories
(1)
Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.
Data Freshness Timeline
(refreshed 13× in last 7d / 45× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-22 14:08 UTCEPSS rescore
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- 2026-05-29 16:27 UTCEG score recompute
- 2026-05-29 16:27 UTCVendor advisory
- 2026-05-29 13:44 UTCEPSS rescore
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Frequently asked(5)
What is CVE-2025-68158?
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