CVE-2026-100542 (GCVE-0-2026-100542)

Vulnerability from cvelistv5 – Published: 2026-09-26 02:18 – Updated: 2026-09-28 17:45
VLAI
Title
OpenClaw before 2026.8.1 Extraction Limit Bypass via tar.bz2
Summary
OpenClaw (npm package 'openclaw') versions >= 2026.5.28 and < 2026.8.1 mishandle archive listings in the tar.bz2 skill installer: bounded command-output suffixes were treated as complete listings of the archive. A crafted .tar.bz2/.tbz2 skill archive can push prohibited entries out of both retained listings so that entry-count and size checks pass, and the archive is then extracted in full. If an operator approves installation of such a malicious or compromised skill archive, over-limit files or entry counts are persisted in the skill tools directory, consuming disk space or inodes. The issue bypasses OpenClaw's extraction budgets but does not by itself execute archive contents. Fixed in 2026.8.1.
Severity
2.3 (Low)
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
3.1 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-28 17:45 UTC
CWE
  • CWE-400 - Uncontrolled Resource Consumption
Assigner
References
Impacted products
Vendor Product Version
OpenClaw OpenClaw Affected: 2026.5.28 , < 2026.8.1 (semver)
Unaffected: 2026.8.1 (semver)
    cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-11 00:00
Show details on NVD website
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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