---
cve: "CVE-2026-100310"
severity: "HIGH"
cvss: 7.3
epss: "0.1%"
vendor: "GNU"
kev: false
exploited: false
published: "2026-09-25 20:17:05"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-10-02T05:04:54+02:00"
---

# CVE-2026-100310

> 7.3 HIGH · 🧪 PoC

## Beschreibung

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.

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **poc**
  - Automatable: **no**
  - Technical Impact: **total**

## CVSS-Vektor

```
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Lokal | good |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |

## Referenzen

- <https://github.com/Haitam-lazaar/libextractor-privesc>
- <https://git.gnunet.org/gnunet/libextractor/commit/6edfa653c048800e24a17f7e8cc2bb42659b8d01.html>
- <https://ftp.gnu.org/gnu/libextractor/>
- <https://www.gnu.org/software/libextractor/>
- <https://www.vulncheck.com/advisories/gnu-libextractor-before-1.16-privilege-escalation-via-libextractor-prefix>
- <http://www.openwall.com/lists/oss-security/2026/09/25/25>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-100310) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_