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CVE-2026-44340— PraisonAI: Symlink-extraction bypass of `_safe_extractall` writes outside `dest_dir`

Quick assessment

Affected
MervinPraison PraisonAI
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

PraisonAI是Mervin Praison个人开发者的一个低代码多智能体协作框架。 PraisonAI 4.6.37之前版本存在路径遍历漏洞，该漏洞源于_safe_extractall辅助函数未验证成员linkname且未拒绝符号链接或硬链接成员，可能导致攻击者写入任意内容到受害者文件系统。

AI Predicted 8.1 Difficulty: Moderate EPSS 0.46% · P38

Affected Version Matrix 1

VendorProduct Version RangeStatus
MervinPraison PraisonAI < 4.6.37 affected
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I. Basic Information for CVE-2026-44340

Vulnerability Information
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Vulnerability Title
PraisonAI: Symlink-extraction bypass of `_safe_extractall` writes outside `dest_dir`
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
PraisonAI 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
PraisonAI是Mervin Praison个人开发者的一个低代码多智能体协作框架。 PraisonAI 4.6.37之前版本存在路径遍历漏洞，该漏洞源于_safe_extractall辅助函数未验证成员linkname且未拒绝符号链接或硬链接成员，可能导致攻击者写入任意内容到受害者文件系统。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
MervinPraison PraisonAI < 4.6.37 -

II. Public POCs for CVE-2026-44340

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III. Intelligence Information for CVE-2026-44340

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Vendor Advisories for CVE-2026-44340 (1)

Same Patch Batch · MervinPraison · 2026-05-08 · 9 CVEs total

CVE-2026-41497 9.8 CRITICAL Incomplete fix for CVE-2026-34935: Command Injection in MervinPraison/PraisonAI
CVE-2026-44339 8.6 HIGH PraisonAI has unsafe tool resolution in `ToolExecutionMixin.execute_tool`: undeclared `__m
CVE-2026-44334 8.4 HIGH PraisonAI: Unauthenticated RCE via `tool_override.py`
CVE-2026-41496 8.1 HIGH PraisonAI: SQL Injection via unvalidated `table_prefix` in 9 conversation store backends (
CVE-2026-44338 7.3 HIGH PraisonAI ships and generates a legacy API server with authentication disabled by default,
CVE-2026-44337 6.3 MEDIUM PraisonAI knowledge-store backends interpolate unvalidated collection names into SQL and C
CVE-2026-44335 SSRF bypass in PraisonAI
CVE-2026-44336 PraisonAI MCP `tools/call` path-traversal and RCE via Python `.pth` injection

IV. Related Vulnerabilities

Same product: PraisonAI
Same vendor: MervinPraison
Same weakness: CWE-22

V. Comments for CVE-2026-44340

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