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CVE-2026-40157

Praison Praisonai path traversal

8.8 HIGHPublic exploitEPSS 0.53%
  1. Published10 Apr 2026

Description

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

Praison Praisonai< 4.5.128

Remediation

Fixed in
Praison Praisonai≥ 4.5.128

References

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Frequently asked

Is CVE-2026-40157 being actively exploited?

CVE-2026-40157 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.53%.

How severe is CVE-2026-40157?

CVE-2026-40157 has a CVSS 3.1 base score of 8.8, rated high. EPSS estimates a 0.53% probability of exploitation.

Which products are affected by CVE-2026-40157?

Affected products include Praison Praisonai.

How do I fix CVE-2026-40157?

Upgrade affected software to a fixed version, for example Praison Praisonai 4.5.128 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-40157 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.