PraisonAI: Code Injection via f-string Interpolation in Deploy API Server Generation

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

9.1 · CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

EPSS

• CVE-2026-61444: 0.50% estimated exploitation activity in the next 30 days; percentile 42.61 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
• CVE-2026-62176: 0.46% estimated exploitation activity in the next 30 days; percentile 39.96 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary The deploy/api.py module generates Python server code by directly interpolating the agentsfile parameter into an f-string that is then written to a file and executed via subprocess.Popen(). An attacker who controls the agentsfile value (via CLI argument, configuration, or upstream API) can inject arbitrary Python code. Details src/praisonai/praisonai/deploy/api.py (line 80): The generated code is then executed (line 190): agentsfile is never sanitized or validated. A malicious value breaks out of the string context: The same pattern exists in deploy/docker.py (line 33) for Dockerfile generation. PoC Impact - Arbitrary code execution on the machine running the deploy command - Supply chain risk if agentsfile comes from a configuration file or CI/CD pipeline

Published by the source

7 Oct 2026, 16:05 UTC

Last modified by the source

15 Oct 2026, 14:56 UTC

Source last checked

26 Oct 2026, 13:55 UTC

1. Revision 3 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-g6j7-pffp-8whg

2. Revision 2 · amended · 24 Oct 2026

   Amended from osv record GHSA-g6j7-pffp-8whg

3. Revision 1 · created · 23 Oct 2026

   Published from ghsa record GHSA-g6j7-pffp-8whg

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# Patch Next advisory brief: CVE-2026-62176

Advisory: PraisonAI: Code Injection via f-string Interpolation in Deploy API Server Generation
IDs: CVE-2026-62176, GHSA-g6j7-pffp-8whg
Record: https://patchnext.com/advisories/cve-2026-62176 (revision 3, source checked 26 Oct 2026, 13:55 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Critical (CVSS 9.1)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: praisonai 4.6.78. A vendor fix does not mean a deployment is fixed.

## Affected components
- PyPI praisonai: affected <= 4.6.77; fixed in 4.6.78

## Suggested inspection (read-only)
- `python -m pip show praisonai`: prints the installed version. Run with the environment that serves production active.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on praisonai.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-g6j7-pffp-8whg (GitHub-reviewed advisory GHSA-g6j7-pffp-8whg lists affected ranges: PyPI praisonai >=0 <=4.6.77)
- Verified: https://osv.dev/vulnerability/GHSA-g6j7-pffp-8whg (OSV record GHSA-g6j7-pffp-8whg lists affected ranges: PyPI praisonai >=0 <4.6.78 (fixed))

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