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CVE-2026-114459— Mod_qos: out-of-bounds reads in response-body substring matching

Quick assessment

Affected
pbuchbinder mod_qos
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 mod_qos 模块中发现一个漏洞。在检查 HTTP 响应体时，由于边界检查不当，该模块可能读取超出已分配缓冲区边界的内存。未经身份验证的远程攻击者可通过触发特制的服务器响应来利用此漏洞，导致 Apache 工作进程崩溃，从而引发拒绝服务（DoS）攻击。

CVSS 3.7 · Low

Possible ATT&CK Techniques 1 AI

T1499.001 · OS Exhaustion Flood
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I. Basic Information for CVE-2026-114459

Vulnerability Information
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Vulnerability Title
Mod_qos: out-of-bounds reads in response-body substring matching
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in mod_qos. When inspecting HTTP response bodies, improper boundary checking can cause the module to read memory outside allocated buffer boundaries. An unauthenticated remote attacker can exploit this vulnerability by triggering specifically crafted server responses, causing an Apache worker process to crash and resulting in a Denial of Service (DoS).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
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
pbuchbinder mod_qos 11.74 -

II. Public POCs for CVE-2026-114459

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III. Intelligence Information for CVE-2026-114459

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Other References for CVE-2026-114459 (2)

Same Patch Batch · pbuchbinder · 2026-10-22 · 4 CVEs total

CVE-2026-114458 5.9 MEDIUM Mod_qos: undersized connection-monitor scratch array permits heap buffer overflow
CVE-2026-114460 5.3 MEDIUM Mod_qos: query truncation during json body merging permits security-rule bypass
CVE-2026-114457 3.7 LOW Mod_qos: missing nul termination in json value escaping permits out-of-bounds reads

IV. Related Vulnerabilities

Same product: mod_qos
Same vendor: pbuchbinder
Same weakness: CWE-125

V. Comments for CVE-2026-114459

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