CVE-2026-93479— NGINX map directive and regex matching vulnerability
一分钟漏洞结论
影响对象
F5 NGINX Plus
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
A vulnerability exists in NGINX Plus and NGINX Open Source when a map directive uses regex matching and the root directive or access log format references the map's regex capture variables before referencing the map output variable. Alternatively, the same res
影响版本矩阵 8
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| F5 | NGINX Open Source | 1.31.2< 1.31.7 |
affected |
1.30.0< 1.30.6 |
affected | ||
| F5 | NGINX Plus | 37.1.0< 37.1.0.1 |
affected |
37.0.0< 37.0.5.1 |
affected | ||
R36< * |
affected | ||
R35< * |
affected | ||
R34< * |
affected | ||
R33< * |
affected |
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一、 漏洞 CVE-2026-93479 基础信息
漏洞信息
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Vulnerability Title
NGINX map directive and regex matching vulnerability
来源: CVE Program / CVE List V5
Vulnerability Description
A vulnerability exists in NGINX Plus and NGINX Open Source when a map directive uses regex matching and the root directive or access log format references the map's regex capture variables before referencing the map output variable. Alternatively, the same result could be achieved by using a non-cacheable variable in a string expression under certain conditions. An unauthenticated attacker along with conditions beyond their control can exploit this vulnerability by sending crafted HTTP requests. This may cause a heap buffer overflow in the NGINX worker process leading to a restart. Additionally, attackers can execute code on systems with Address Space Layout Randomization (ASLR) disabled or when the attacker can bypass ASLR.
Impact:
This vulnerability may allow remote attackers to cause a denial-of-service (DoS) on the NGINX system or to possibly trigger a code execution. There is no control plane exposure; this is a data plane issue only.
Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
来源: 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
来源: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
来源: CVE Program / CVE List V5
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| F5 | NGINX Plus | 37.1.0 ~ 37.1.0.1 | - |
|
| F5 | NGINX Open Source | 1.31.2 ~ 1.31.7 | - |
|
二、漏洞 CVE-2026-93479 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-93479 其他参考 (1)
同批安全公告 · F5 · 2026-10-14 · 共 11 条
| CVE-2026-91184 | 8.8 HIGH | NGINX Gateway Fabric vulnerability |
| CVE-2026-15176 | 8.1 HIGH | NGINX ngx_http_core_module vulnerability |
| CVE-2026-97205 | 8.1 HIGH | NGINX ngx_http_core_module vulnerability |
| CVE-2026-94197 | 7.5 HIGH | NGINX Ingress Controller vulnerability |
| CVE-2026-104939 | 7.5 HIGH | NGINX Ingress Controller vulnerability |
| CVE-2026-101019 | 6.5 MEDIUM | NGINX ngx_http_js_module vulnerability |
| CVE-2026-96615 | 6.5 MEDIUM | NGINX Gateway Fabric vulnerability |
| CVE-2026-97629 | 6.5 MEDIUM | NGINX ngx_http_ssl_module vulnerability |
| CVE-2026-95101 | 5.3 MEDIUM | NGINX ngx_http_v3_module vulnerability |
| CVE-2026-101025 | 5.3 MEDIUM | NGINX ngx_http_js_module vulnerability |
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V. Comments for CVE-2026-93479
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