Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-32766— astral-tokio-tar insufficiently validates PAX extensions during extraction

Quick assessment

Affected
astral-sh tokio-tar
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.

astral-tokio-tar是Astral开源的一个Rust库。 astral-tokio-tar 0.5.6及之前版本存在安全漏洞，该漏洞源于解析tar存档时静默跳过格式错误的PAX扩展，可能被用作解析器差异化的构建块。

AI Predicted 5.3 Difficulty: Hard EPSS 0.30% · P21
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-32766

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
astral-tokio-tar insufficiently validates PAX extensions during extraction
Source: CVE Program / CVE List V5
Vulnerability Description
astral-tokio-tar is a tar archive reading/writing library for async Rust. In versions 0.5.6 and earlier, malformed PAX extensions were silently skipped when parsing tar archives. This silent skipping (rather than rejection) of invalid PAX extensions could be used as a building block for a parser differential, for example by silently skipping a malformed GNU “long link” extension so that a subsequent parser would misinterpret the extension. In practice, exploiting this behavior in astral-tokio-tar requires a secondary misbehaving tar parser, i.e. one that insufficiently validates malformed PAX extensions and interprets them rather than skipping or erroring on them. This vulnerability is considered low-severity as it requires a separate vulnerability against any unrelated tar parser. This issue has been fixed in version 0.6.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U
Source: CVE Program / CVE List V5
Vulnerability Type
解释冲突
Source: CVE Program / CVE List V5
Vulnerability Title
astral-tokio-tar 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
astral-tokio-tar是Astral开源的一个Rust库。 astral-tokio-tar 0.5.6及之前版本存在安全漏洞，该漏洞源于解析tar存档时静默跳过格式错误的PAX扩展，可能被用作解析器差异化的构建块。
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
astral-sh tokio-tar < 0.6.0 -

II. Public POCs for CVE-2026-32766

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-32766

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-32766 (1)

Vendor Advisories for CVE-2026-32766 (1)

IV. Related Vulnerabilities

Same product: tokio-tar
Same vendor: astral-sh
Same weakness: CWE-436

V. Comments for CVE-2026-32766

No comments yet

Leave a comment