CVE-2026-100310
HighCVSS 7.0Summary
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.
Risk Assessment
A local attacker can execute arbitrary code with elevated privileges, taking control of the system.
Recommendation
Update GNU libextractor to version 1.16 or later to fix the vulnerability, and avoid using setuid/setgid programs with this library.
Other vulnerabilities in GNU libextractor
See all- CVE-2017-15602High
In GNU Libextractor 1.4, there is an integer signedness error for the chunk size in the EXTRACTOR_nsfe_extract_method function in plugins/nsfe_extractor.c, leading to an infinite loop for a crafted size.
- CVE-2017-15601High
In GNU Libextractor version 1.4, there is a heap-based buffer overflow in the EXTRACTOR_png_extract_method function in plugins/png_extractor.c, related to processiTXt and stndup.
- CVE-2017-15600High
In GNU Libextractor version 1.4, there is a NULL Pointer Dereference in the EXTRACTOR_nsf_extract_method function of plugins/nsf_extractor.c.
- CVE-2017-15267High
In GNU Libextractor version 1.4, there is a NULL Pointer Dereference in the flac_metadata function in flac_extractor.c.
- CVE-2026-91752High
GNU libextractor before 1.15 contains a stack-based buffer overflow vulnerability in the process_star_office function that sizes a variable-length stack array from attacker-controlled OLE2 stream data. Attackers can craft malicious StarOffice documents that allocate up to 4 MB on the stack, causing stack overflow and crashing any application extracting metadata from the document.
Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS