CVE-2026-55539 PraisonAI: [Auth Bypass] PraisonAI async Jobs API (`/api/v1/runs`) has no authentication — unauthenticated job execution, result theft, cancel and delete
Unauthenticated attackers can execute, read, cancel, or delete jobs via the PraisonAI Jobs API due to missing authentication checks.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-55539?
CVE-2026-55539 is a high-severity missing authorization vulnerability in MervinPraison PraisonAI, published on 25 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
PraisonAI is a multi-agent teams system. Prior to praisonai 4.6.51, the Jobs API create_app function mounts /api/v1/runs without authentication. Any reachable caller can submit jobs, read results, cancel runs, or delete jobs using operator credentials. The fix adds PRAISONAI_JOBS_API_KEY middleware for Authorization or X-API-Key. This issue is fixed in version 4.6.58.
Weakness: CWE-306
Which versions are affected by CVE-2026-55539?
3 open source packages ship an affected version, including praisonai and PraisonAI.
| Package | Affected | Fixed in |
|---|---|---|
praisonai PyPI | All versions | 4.6.58 |
praisonai PyPI | All versions | 4.6.58 |
PraisonAI PyPI | All versions | 4.6.58 |
How do I fix CVE-2026-55539?
Upgrade praisonai to 4.6.58 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-55539 being exploited?
There is no known exploitation of CVE-2026-55539 in the wild and no public exploit code.
Sources
Also known as GHSA-2jgc-f764-c5r2, PYSEC-2026-3885.