CVE-2026-100310
GNU libextractor before 1.16 Privilege Escalation via LIBEXTRACTOR_PREFIX
CVSS Score
7.0
EPSS Score
0.0%
EPSS Percentile
0th
GNU libextractor before 1.16 loads plugins from an untrusted search path specified by the LIBEXTRACTOR_PREFIX environment variable without proper privilege checks. A local attacker can exploit this by setting LIBEXTRACTOR_PREFIX to a directory containing a malicious plugin that executes arbitrary code with elevated privileges when loaded by a setuid or setgid program.
| CWE | CWE-426 |
| Vendor | gnu |
| Product | libextractor |
| Published | Sep 25, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
GNU / libextractor
0 < 1.16
References
github.com: https://github.com/Haitam-lazaar/libextractor-privesc git.gnunet.org: https://git.gnunet.org/gnunet/libextractor/commit/6edfa653c048800e24a17f7e8cc2bb42659b8d01.html ftp.gnu.org: https://ftp.gnu.org/gnu/libextractor/ gnu.org: https://www.gnu.org/software/libextractor/ vulncheck.com: https://www.vulncheck.com/advisories/gnu-libextractor-before-1.16-privilege-escalation-via-libextractor-prefix
Credits
Haitam Lazaar