CVE-2026-34953 json
PraisonAI: Authentication Bypass in OAuthManager.validate_token()
published 7mo ago modified 3mo ago also GHSA-98f9-fqg5-hvq5 , PYSEC-2026-468 , EUVD-2026-18925
- cvss
- 9.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 33%
- public exploits
- 0
- none known
Summary
PraisonAI is a multi-agent teams system. Prior to version 4.5.97, OAuthManager.validate_token() returns True for any token not found in its internal store, which is empty by default. Any HTTP request to the MCP server with an arbitrary Bearer token is treated as authenticated, granting full access to all registered tools and agent capabilities. This issue has been patched in version 4.5.97.
Patch / fix
- pypi praisonai 4.5.97
- praison praisonai 4.5.97
Is CVE-2026-34953 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 7mo ago
Exploit prediction
0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- github.com https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-98f9-fqg5-hvq5 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
| OSV | 3.1 | 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
| GitHub | 3.1 | 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | praisonai | <4.5.97 |
4.5.97 |
Affected products
- MervinPraison PraisonAI
Classification
- Weakness
-
- CWE-863 Incorrect Authorization
References
-
github.com
/MervinPraison/PraisonAI/security/advisories/GHSA-98f9-fqg5-hvq5
exploit, web, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-34953
advisory
-
github.com
/MervinPraison/PraisonAI
package
-
pypi.org
/project/praisonai
package
-
github.com
/advisories/GHSA-98f9-fqg5-hvq5
advisory
Sources
- CVE List CVE-2026-34953
- GitHub Advisory GHSA-98f9-fqg5-hvq5
- NVD CVE-2026-34953
- OSV PYSEC-2026-468
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