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CVE-2026-111274— unarr through 1.1.1 Heap Out-of-Bounds Read via zip_parse_extra_fields

Quick assessment

Affected
selmf unarr
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在版本 1.1.1 及之前的 unarr 中存在一个基于堆的越界读取漏洞，该漏洞位于 文件中的 函数内，原因是 ZIP64 额外字段长度检查不正确。攻击者可以通过提供一个包含 0xFFFFFFFF 哨兵值且 ZIP64 记录被截断的精心构造的 ZIP 存档文件，导致读取超出堆缓冲区范围，从而引发程序崩溃。

CVSS 5.5 · Medium

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2026-111274

Vulnerability Information
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Vulnerability Title
unarr through 1.1.1 Heap Out-of-Bounds Read via zip_parse_extra_fields
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
selmf unarr 0 ~ 1.1.1 -

II. Public POCs for CVE-2026-111274

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-111274

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Vendor Advisories for CVE-2026-111274 (1)

Proof of Concept for CVE-2026-111274 (1)

Security Blog Posts for CVE-2026-111274 (1)

Vendor Pages for CVE-2026-111274 (1)

IV. Related Vulnerabilities

Same product: unarr
Same vendor: selmf
Same weakness: CWE-125

V. Comments for CVE-2026-111274

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