CVE-2026-81690 (GCVE-0-2026-81690)

Vulnerability from cvelistv5 – Published: 2026-08-27 14:50 – Updated: 2026-10-01 15:21
VLAI
Title
verify-usb before 1.4.9 Symlink Directory Traversal Code Execution
Summary
openssl-encrypt (pip package) before 1.4.9 contains a symlink-following flaw in its verify-usb v2 added-file allowlist scan. The scan enumerated the drive with rglob(), which in CPython does not descend into symlinked directories and treats the symlink as an ordinary directory, while O_NOFOLLOW on the hash side binds only the final path component. An evil-maid attacker with physical access to the removable drive could replace a tool-tree directory with a symlink to a copy containing byte-identical files plus a planted __pycache__/*.pyc file (which CPython loads in preference to recompiling the clean .py). The planted file is never enumerated, added_files stays 0, and verify-usb reports PASSED, resulting in code execution when the victim runs the portable install. Fixed in 1.4.9 (affects both 1.4.x and 1.5.x lines).
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
7.3 (High)
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-27 19:25 UTC
CWE
  • CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
Impacted products
Vendor Product Version
jahlives openssl_encrypt Affected: 0 , < 1.4.9 (semver)
Unaffected: 1.4.9 (semver)
    cpe:2.3:a:jahlives:openssl_encrypt:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-08-12 00:00
Show details on NVD website
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