PraisonAI: API deploy code generator embeds unescaped YAML fields into Python source

Exploitation

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

CVSS

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

EPSS

• CVE-2026-61433: 0.21% estimated exploitation activity in the next 30 days; percentile 11.25 (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.

API deploy code generator embeds unescaped YAML fields into Python source Summary PraisonAI's API deployment generator copies deploy.api.host from agents.yaml directly into generated Python source without safe literal encoding. A malicious PraisonAI project can set that host value to a Python expression splice; when an operator runs the API deploy flow, the generated server source compiles and executes the injected expression at startup. The same generator also embeds agentsfile directly into generated route-handler expressions, giving a second route-time source injection site if the agent file path is attacker-controlled. Technical Details The vulnerable path starts with deployment configuration parsing. Deploy.fromyaml() reads the operator-supplied agents.yaml, validateagentsyaml() accepts deploy.api.host as a string, and API deployments call startapiserver(self.agentsfile, self.config.api). startapiserver() calls generateapiservercode() and executes the generated Python file with…

Published by the source

8 Oct 2026, 19:36 UTC

Last modified by the source

15 Oct 2026, 14:55 UTC

Source last checked

26 Oct 2026, 13:55 UTC

1. Revision 3 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-79fv-7hq9-w7xg

2. Revision 2 · amended · 24 Oct 2026

   Amended from osv record GHSA-79fv-7hq9-w7xg

3. Revision 1 · created · 23 Oct 2026

   Published from ghsa record GHSA-79fv-7hq9-w7xg

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# Patch Next advisory brief: CVE-2026-61433

Advisory: PraisonAI: API deploy code generator embeds unescaped YAML fields into Python source
IDs: CVE-2026-61433, GHSA-79fv-7hq9-w7xg
Record: https://patchnext.com/advisories/cve-2026-61433 (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: High (CVSS 7.8)
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-79fv-7hq9-w7xg (GitHub-reviewed advisory GHSA-79fv-7hq9-w7xg lists affected ranges: PyPI praisonai >=0 <=4.6.77)
- Verified: https://osv.dev/vulnerability/GHSA-79fv-7hq9-w7xg (OSV record GHSA-79fv-7hq9-w7xg lists affected ranges: PyPI praisonai >=0 <4.6.78 (fixed))

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