Out-of-bounds Read in Gdraheim Zziplib
CVE-2026-111141
zziplib through 0.13.80 contains an out-of-bounds read vulnerability in __zzip_parse_root_directory() in zzip/zip.c that allows attackers to read past the mapped central directory in mmap builds due to an ineffective bounds check. Attackers can supply a crafted ZIP whose entry name ends at the central directory end, triggering 28-byte ZIP64 extra field over-reads via zzip_dir_open() that crash the process.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- hackmd.io/@haind-pwn/zziplib-zip-central-directory-oob-read (technical-description)
- github.com/gdraheim/zziplib/blob/f58313c1f65f46bf73f3526d1afd4d6bb46cc4ae/zzip/… (technical-description)
- github.com/gdraheim/zziplib (product)
- www.vulncheck.com/advisories/zziplib-through-0.13.80-out-of-bounds-read-via-zzi… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-111141?
- CVE-2026-111141 is a medium-severity vulnerability in Gdraheim Zziplib, classified under Out-of-bounds Read. CVSS score: 4.7/10. Published 2026-10-15.
- How severe is CVE-2026-111141?
- Medium severity. CVSS v3 base score is 4.7 out of 10.