CVE-2026-111274CWE-125

CVE-2026-111274

Medium · published October 16, 2026

CVSS v3.1
5.5
EPSS
0%
Percentile
2.4
In the wild
Unconfirmed
What it is

unarr through 1.1.1 contains a heap-based out-of-bounds read in zip_parse_extra_fields() in zip/parse-zip.c due to an incorrect ZIP64 extra field length check. Attackers can supply a crafted ZIP archive with 0xFFFFFFFF sentinel values and a truncated ZIP64 record to read past the heap buffer and crash the process.

The record
Technical detail
CVSS v3.1
5.5 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS v4.0
6.8 · CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00130 · 2.4th percentile
Weakness
CWE-125 · Out-of-bounds Read
Published
2026-10-16T02:19Z
References (5)
https://github.com/selmf/unarr · [email protected]https://github.com/selmf/unarr/blob/b211040df83dee513362cdeb9bd87afa26fd5e38/zip/parse-zip.c#L48-L72 · [email protected]https://hackmd.io/@haind-pwn/unarr-tar-zip-oob · [email protected]https://www.vulncheck.com/advisories/unarr-through-1.1.1-heap-out-of-bounds-read-via-zip-parse-extra-fields · [email protected]https://hackmd.io/@haind-pwn/unarr-tar-zip-oob · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 17 OCT 03:28Z
    EPSS moved — → 0%
    epss
  • 15 OCT 21:43Z
    unarr through 1.1.1 Heap Out-of-Bounds Read via zip_parse_extra_fields
    cvelistv5
  • 15 OCT 21:43Z
    unarr through 1.1.1 Heap Out-of-Bounds Read via zip_parse_extra_fields
    cvelistv5