CVE-2026-41425: Authlib · Cross-site request forging when using cache
Affects kimi-cliSource GCVE Database
Not known to be exploited · CVSS 5.4 Medium : upgrade to 1.33.0_1 when convenient.
Data as of 26 Oct 2026, 06:26 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 1% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 1.3.0-1ubuntu0.1~esm2, 1.6.7-1ubuntu0.1~esm1, 1.33.0_1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 13 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.
What to do
Upgrade kimi-cli to 1.33.0_1; python-authlib to 1.3.0-1ubuntu0.1~esm2; python-authlib to 1.6.7-1ubuntu0.1~esm1.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu:Pro:24.04:LTSpython-authlibpkg:deb/ubuntu/python-authlib@1.3.0-1ubuntu0.1~esm2?arch=source&distro=esm-apps/nobleOther threats | Affected
| Fixed in
|
Ubuntu:25.10python-authlibpkg:deb/ubuntu/python-authlib@1.6.0-1?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu:Pro:26.04:LTSpython-authlibpkg:deb/ubuntu/python-authlib@1.6.7-1ubuntu0.1~esm1?arch=source&distro=esm-apps/resoluteOther threats | Affected
| Fixed in
|
Homebrewkimi-clipkg:brew/kimi-cliOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A fix is available and can be applied through standard system updates or by using Ubuntu Pro Extended Security Maintenance (ESM) packages. Users of affected versions should update to the patched versions provided by Ubuntu. No additional mitigation is required beyond applying these official updates.
Description
Authlib's OAuth integration with Starlette clients has a cross-site request forgery (CSRF) vulnerability when using the cache parameter to store authentication state. This flaw allows attackers to trick victims into completing authorization flows initiated by the attacker. The issue affects specific versions of kimi-cli and related packages. A fix is available through system updates and Ubuntu Pro Extended Security Maintenance (ESM) packages.
References
- ubuntu.com/security/CVE-2026-41425 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-41425 (opens in a new tab)
- github.com/authlib/authlib/security/advisories/GHSA-jj8c-mmj3-mmgv (opens in a new tab)
- ubuntu.com/security/notices/USN-8557-1 (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2026-41425 (opens in a new tab)
- github.com/authlib/authlib (opens in a new tab)
- github.com/pypa/advisory-database/tree/main/vulns/authlib/PYSEC-2026-25.yaml (opens in a new tab)