---
title: "CVE-2026-34953: PraisonAI Has Authentication Bypass via OAuthManager.validate_token()"
url: https://erroneo.us/security/cve/CVE-2026-34953/
description: "CVE-2026-34953 (praisonai (PyPI)): PraisonAI is a multi-agent teams system. Prior to version 4.5.97, OAuthManager.validatetoken() returns True for any token…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-04-03
date_modified: 2026-04-06
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-34953"
kev: false
cvss: 9.1
epss: 0.00418
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-34953: PraisonAI Has Authentication Bypass via OAuthManager.validate_token()

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Not in CISA KEV , but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
- EPSS 0.4% , percentile 35: FIRST’s model estimates a 0.4% chance of exploitation activity in the next 30 days, higher than 35% of all scored CVEs (low). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes praisonai (PyPI) <= 4.5.96, fixed in 4.5.97 . Check your lockfile, including transitive dependencies.

## What it is

PraisonAI is a multi-agent teams system. Prior to version 4.5.97, OAuthManager.validatetoken() 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.

## Affected packages

- PyPI `praisonai` <= 4.5.96 → fixed: 4.5.97

## Affected products (CVE record)

- MervinPraison PraisonAI: < 4.5.97

## Severity

- GitHub_M CVSS 3.1: 9.1 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N`
- GitHub CVSS 3.1: 9.1 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation poc , automatable yes , technical impact partial .
- FIRST EPSS (model of 2026-10-21): 0.42% probability of exploitation activity in the next 30 days; percentile 35.

## Sources

- [GitHub Advisory GHSA-98f9-fqg5-hvq5](https://github.com/advisories/GHSA-98f9-fqg5-hvq5)
- [CVE.org record CVE-2026-34953](https://www.cve.org/CVERecord?id=CVE-2026-34953)
- [NVD entry CVE-2026-34953](https://nvd.nist.gov/vuln/detail/CVE-2026-34953)
- [github.com](https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-98f9-fqg5-hvq5)

---
Source page: https://erroneo.us/security/cve/CVE-2026-34953/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt