High
libextractor — security advisory
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.
- Products
- libextractor
- Affected versions
- 1:1.1-1ubuntu1, 1:1.11-5, 1:1.11-8, 1:1.13-10, 1:1.13-3, 1:1.13-3build2, 1:1.13-3build3, 1:1.13-8build1, 1:1.13-9, 1:1.19-2, 1:1.2-1ubuntu1, 1:1.3-1, 1:1.3-1ubuntu0.1~esm1, 1:1.3-2build1, 1:1.3-2ubuntu1, 1:1.3-3, 1:1.3-4+deb9u3build0.16.04.1, 1:1.3-4build3, 1:1.6-1, 1:1.6-1build1, 1:1.6-2, 1:1.9-2, 1:1.9-2ubuntu1, 1:1.9-3
- Fixed versions
- Not specified
- CVEs
- CVE-2026-100310
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 02:35 UTC · Revision 1
Source evidence
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.
osv:UBUNTU-CVE-2026-100310
libextractor
Fixed versions: Not specified
libextractor
Fixed versions: Not specified
libextractor
Fixed versions: Not specified
libextractor
Fixed versions: Not specified
libextractor
Fixed versions: Not specified
libextractor
Fixed versions: Not specified
libextractor
Fixed versions: Not specified
libextractor
Fixed versions: Not specified
Complete source record
{
"id": "a046648dedd5785df0f168994896a81f7c1e3d515ccc31aa6fcc1dfe43d665f2",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-100310",
"method": "structured",
"payload": {
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"title": "UBUNTU-CVE-2026-100310",
"summary": "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.",
"evidence": "osv:UBUNTU-CVE-2026-100310",
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"prerequisites": [],
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"severity": "high",
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{
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},
{
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"binary_version": "1:1.13-9"
},
{
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"binary_version": "1:1.13-9"
},
{
"binary_name": "libextractor-plugins-all",
"binary_version": "1:1.13-9"
},
{
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"binary_version": "1:1.13-9"
},
{
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}
]
}
}
],
"modified": "2026-10-17T12:58:41.587770767Z",
"provider": "osv",
"upstream": [
"CVE-2026-100310"
],
"references": [
"https://ubuntu.com/security/CVE-2026-100310",
"https://www.cve.org/CVERecord?id=CVE-2026-100310",
"https://www.openwall.com/lists/oss-security/2026/09/25/25",
"https://github.com/Haitam-lazaar/libextractor-privesc",
"https://ftp.gnu.org/gnu/libextractor/",
"https://git.gnunet.org/gnunet/libextractor/commit/6edfa653c048800e24a17f7e8cc2bb42659b8d01.html",
"https://www.gnu.org/software/libextractor/",
"https://www.vulncheck.com/advisories/gnu-libextractor-before-1.16-privilege-escalation-via-libextractor-prefix"
]
},
"related_cves": [
{
"value": "CVE-2026-100310",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/1/score"
},
"source_id": "core-osv",
"document_id": 358963,
"published_at": "2026-09-25T20:17:00+00:00"
}