TI-2026-28972 Aliases CVE-2026-40157 GHSA-99g3-w8gr-x37c

PraisonAI affected by arbitrary file write via path traversal in `praisonai recipe unpack`

HIGH 76CWE-22Published 2026-04-10 · Updated 2026-04-14

Key facts

Attack vector: Network
Privileges required: None
User interaction: Passive
Attack complexity: Low
Attack requirements: None
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub.

Summary

PraisonAI is a multi-agent teams system. Prior to 4.5.128, cmd_unpack in the recipe CLI extracts .praison tar archives using raw tar.extract() without validating archive member paths. A .praison bundle containing ../../ entries will write files outside the intended output directory. An attacker who distributes a malicious bundle can overwrite arbitrary files on the victim's filesystem when they run praisonai recipe unpack. This vulnerability is fixed in 4.5.128.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00385 32nd percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed PraisonAI (MervinPraison): 4.5.128PraisonAI (PyPI): 4.5.128

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
MervinPraison	PraisonAI	before 4.5.128	4.5.128	Patch available	CNA
—	PraisonAI (PyPI)	2.7.2 to before 4.5.128	4.5.128	Patch available	GHSA-99g3-w8gr-x37c

PraisonAI VendorMervinPraison Affected before 4.5.128 Fixed in 4.5.128 Patch available CNA
PraisonAI (PyPI) Vendor— Affected 2.7.2 to before 4.5.128 Fixed in 4.5.128 Patch available GHSA-99g3-w8gr-x37c

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:praison:praisonai::::::::	before 4.5.128	Vulnerable	MervinPraison

cpe:2.3:a:praison:praisonai:*:*:*:*:*:*:*:* Versions before 4.5.128 Vulnerable ·MervinPraison

Remediation

Fix · CNA PraisonAI (MervinPraison) Fixed in 4.5.128
Fix · GHSA-99g3-w8gr-x37c PraisonAI (PyPI) Fixed in 4.5.128 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-40157
2026-10-03 Alias added: GHSA-99g3-w8gr-x37c

References

Exploit 1

https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-99g3-w8gr-x37c

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-40157

Other 2

TI-2026-30083 Incomplete fix for CVE-2026-34935: Command Injection in MervinPraison/PraisonAI CVSS 3.1CRITICAL 9.8
TI-2026-29070 PraisonAI: Critical RCE via `type: job` workflow YAML CVSS 3.1CRITICAL 9.8
TI-2026-28940 PraisonAI has Server-Side Request Forgery via Unvalidated webhook_url in Jobs API CVSS 3.1CRITICAL 10.0
TI-2026-28768 PraisonAI Affected by Remote Code Execution via YAML Deserialization in Agent Definition Loading CVSS 3.1CRITICAL 9.8
TI-2026-27159 PraisonAI: OS Command Injection in MCPHandler.parse_mcp_command() CVSS 3.1CRITICAL 9.8
TI-2026-27158 PraisonAI: Second-Order SQL Injection in `get_all_user_threads` CVSS 3.1CRITICAL 9.8

See all 42 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences