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VulnerabilityPublished Updated

CVE-2026-34955: MervinPraison PraisonAI · OS Command Injection

Affects MervinPraison PraisonAISource CVE Database V5

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Not known to be exploited · CVSS 8.8 High : upgrade to 4.5.97 soon.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score
8.8High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 32% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 4.5.97
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 3 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade PraisonAI and mervinpraison/PraisonAI to 4.5.97.

Affected software

ProductAffectedFixed in
MervinPraisonPraisonAIAffected
  • <4.5.97
Fixed in
  • 4.5.97
GitHubmervinpraison/PraisonAIpkg:github/mervinpraison/PraisonAIOther threatsAffected
  • <4.5.97
Fixed in
  • 4.5.97

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A fix is available in PraisonAI version 4.5.97. Users should upgrade to this version or later to remediate the vulnerability. No other mitigation guidance is provided or necessary as the issue is resolved by the official patch.

Description

PraisonAI is a multi-agent teams system. Prior to version 4.5.97, SubprocessSandbox in all modes (BASIC, STRICT, NETWORK_ISOLATED) calls subprocess.run() with shell=True and relies solely on string-pattern matching to block dangerous commands. The blocklist does not include sh or bash as standalone executables, allowing trivial sandbox escape in STRICT mode via sh -c '<command>'. This issue has been patched in version 4.5.97.

References

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