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Vulnerabilities CVE-2026-44340

CVE-2026-44340

High
Open
TLP:CLEAR

PraisonAI: Symlink-extraction bypass of `_safe_extractall` writes outside `dest_dir`

NVD CVE.org
Critical Infrastructure

AI Analysis

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Description

PraisonAI is a multi-agent teams system. Prior to version 4.6.37, the _safe_extractall helper that all recipe pull, recipe publish, and recipe unpack flows route through validates each archive member's name for absolute paths, .. segments, and resolved-path escape — but does not validate member.linkname, does not reject symlink/hardlink members, and calls tar.extractall(dest_dir) without filter="data". A bundle that contains a symlink with a name inside dest_dir but a linkname pointing outside it, followed by a regular file whose path traverses through the just-created symlink, escapes dest_dir and lets the attacker write arbitrary content to an attacker-chosen location on the victim's filesystem. This issue has been patched in version 4.6.37.

Details

CVSS Score
8.7
EPSS Score
0.43%

35.8th percentile

CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Confidence
90%
Published
May 8, 2026
Last Modified
May 8, 2026
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