CVE-2026-100310

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{"bugzilla": {"description": "libextractor: libextractor: Privilege escalation via LIBEXTRACTOR_PREFIX environment variable", "id": "2541609", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2541609"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-426", "details": ["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.", "A flaw was found in libextractor. When executed by privileged applications, such as those running with elevated set user ID (setuid) permissions, the library loads plugins from an untrusted search path defined by the LIBEXTRACTOR_PREFIX environment variable without verifying caller privileges. A local attacker can exploit this issue by pointing the variable to a directory containing a crafted plugin, leading to arbitrary code execution with elevated privileges."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2026-100310", "public_date": "2026-09-25T19:38:28Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-100310\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-100310\nhttps://ftp.gnu.org/gnu/libextractor/\nhttps://git.gnunet.org/gnunet/libextractor/commit/6edfa653c048800e24a17f7e8cc2bb42659b8d01.html\nhttps://github.com/Haitam-lazaar/libextractor-privesc\nhttps://www.gnu.org/software/libextractor/\nhttps://www.vulncheck.com/advisories/gnu-libextractor-before-1.16-privilege-escalation-via-libextractor-prefix"], "statement": "This issue does not affect any Red Hat product. The libextractor package is only available in Fedora community repositories.", "threat_severity": "Moderate"}

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