CVE-2026-107891
Quick assessment
Affected
musl -libc musl
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 1.2.7 版本之前的 musl libc 中，若将不受信任的正则表达式用于 函数，会引发多个整数溢出漏洞，可能导致内存分配大小计算错误，进而造成堆内存越界写入。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| musl -libc | musl | 0.5.0< 1.2.7 |
affected |
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I. Basic Information for CVE-2026-107891
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
musl libc before 1.2.7, when an untrusted regular expression is used with regcomp, has multiple integer overflows, possibly leading to incorrect allocation sizes and out-of-bounds heap writes.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
整数溢出或超界折返
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| musl -libc | musl | 0.5.0 ~ 1.2.7 | - |
|
II. Public POCs for CVE-2026-107891
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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