CVE-2026-42533

CVE-2026-42533 — Exploit PoC de desbordamiento de búfer en el montón de nginx Ejecución remota de código sin autenticación mediante la corrupción de capturas en dos pasadas PoC público liberado el 2026-07-27 — No esperes, aplica el parche ahora. | ---|--- CVE| CVE-2026-42533 CVSS 4.0| 9.2 Crítico...

CVE-2026-9256-Poc

nginx ngxhttprewritemodule 堆缓冲区溢出 描述 nginx Plus 和 nginx 开源版的 ngxhttprewritemodule 存在堆缓冲区溢出漏洞。当 rewrite 指令使用包含多个重叠 PCRE 捕获组的正则表达式（例如 ^/.$），且替换字符串引用多个捕获组（例如 $1&y=$2）时，静态路径缓冲区大小计算低估了所需空间，导致实际写入超过分配大小（Pool Slip）。 未经身份验证的攻击者可通过精心构造的 HTTP 请求触发此漏洞，导致工作进程发生堆缓冲区溢出。当 ASLR 被禁用或可被绕过时，存在代码执行的可能。 根因 文件 :...

NGINX-ngx_http_rewrite_module-heap-buffer-overflow-CVE-2026-9256

CVE-2026-9256 NGINX ngxhttprewritemodule PoC 推导过程与思考 适用范围：仅用于本地靶场、授权复现环境、漏洞验证和防护规则分析。不要对未授权目标使用。本文中的 PoC 思路只验证远程可见的 NGINX worker crash 行为，不包含 RCE、ASLR 绕过或稳定利用链。 1. 漏洞背景 CVE-2026-9256 是 NGINX ngxhttprewritemodule 中的堆缓冲区溢出漏洞。漏洞触发并不是单纯访问某个固定 URI，而是依赖特定的 rewrite 配置模式：rewrite 正则中存在互相重叠的 PCRE 捕获组，并且...

CLSA-2026-1779282813 Fix CVE(s): CVE-2026-42945

SECURITY UPDATE: heap buffer overflow in ngxhttprewritemodule when an unnamed PCRE capture group with '?' in the replacement is followed by another rewrite, if, or set directive - debian/patches/CVE-2026-42945.patch: clear isargs flag at the start of ngxhttpscriptregexendcode in...

CVE-2020-5243

uap-core before 0.7.3 is vulnerable to a denial of service attack when processing crafted User-Agent strings. Some regexes are vulnerable to regular expression denial of service REDoS due to overlapping capture groups. This allows remote attackers to overload a server by setting the User-Agent...

Babel 安全漏洞

Babel is a compiler for JavaScript in the Babel open source. A security vulnerability exists in Babel versions prior to 7.26.10 and prior to 8.0.0-alpha.17, which stems from a .replace method generated when compiling regular expression named capture groups that has a quadratic complexity on certa...

GHSA-CMCX-XHR8-3W9P Denial of Service in uap-core when processing crafted User-Agent strings

Impact Some regexes are vulnerable to regular expression denial of service REDoS due to overlapping capture groups. This allows remote attackers to overload a server by setting the User-Agent header in an HTTPS request to maliciously crafted long strings. Patches Please update uap-core to gt;=...