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CVE-2026-33055 - Vulnerability Analysis

HighCVSS: 8.1

Last Updated: March 23, 2026

tar-rs - Data Tampering

Published: March 20, 2026Updated: March 23, 2026PoC AvailableRemote Exploitable

Overview

tar-rs <= 0.4.44 contains a vulnerability caused by incorrect handling of PAX size headers in tar archives, letting attackers create archives that unpack inconsistently across parsers, exploit requires crafted archive files.

Severity & Score

Severity: High

CVSS Score: 8.1

Impact

Attackers can create archives that unpack differently across tools, potentially causing data integrity issues or unexpected behavior.

Mitigation

Update to version 0.4.45 or later.

References

https://github.com/alexcrichton/tar-rs/commit/de1a5870e603758f430073688691165f21a33946
https://github.com/alexcrichton/tar-rs/security/advisories/GHSA-gchp-q4r4-x4ff
https://www.cve.org/CVERecord?id=CVE-2025-62518

Related Resources

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Details

CVE ID: CVE-2026-33055
Severity: High
CVSS Score: 8.1
Type: undefined
Status: confirmed

CWE

CWE-843

CVSS Metrics

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N