CVE-2026-111274
unarr through 1.1.1 Heap Out-of-Bounds Read via zip_parse_extra_fields
- State
- Published
- Severity
- 6.8 Medium
- Published
- Oct 15, 2026
- Updated
- Nov 2, 2026
- Reserved
- Oct 15, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.8 Medium | 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 | VulnCheck |
| 3.1 | 5.5 Medium | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H | VulnCheck |
Weaknesses
- CWE-125 Out-of-bounds Read
Affected Products
| Product | Versions |
|---|---|
unarrselmf |
|
References
- GitHub Security Advisory (GHSA-qm4g-jf39-jwjj)vendor-advisory
- Release Notesrelease-notespatch
- https://hackmd.io/@haind-pwn/unarr-tar-zip-oobtechnical-descriptionexploit
- VulnCheck Advisory: unarr through 1.1.1 Heap Out-of-Bounds Read via zip_parse_extra_fieldsthird-party-advisory
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