# 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.

- **Severity:** High 8.6 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 25 Aug 2026
- **Updated:** 25 Aug 2026
- **Also known as:** GHSA-2jgc-f764-c5r2, PYSEC-2026-3885

## 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 (Missing Authentication for Critical Functionality)

## Which versions are affected by CVE-2026-55539?

3 open source packages ship an affected version, including praisonai and PraisonAI.


| Package | Ecosystem | 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.

## Is CVE-2026-55539 being exploited?

There is no known exploitation of CVE-2026-55539 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-55539 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2026-55539 in the wild and no public exploit code.

Affected packages and fixed versions:
- praisonai (PyPI): affected all versions; fixed in 4.6.58
- praisonai (PyPI): affected all versions; fixed in 4.6.58
- PraisonAI (PyPI): affected all versions; fixed in 4.6.58

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-55539/ (Markdown: https://insights.sbomify.com/CVE-2026-55539/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-55539
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-55539
- OSV: https://osv.dev/vulnerability/CVE-2026-55539

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-55539/
Summaries are generated and may contain mistakes; the official description above is the record.