1 sources verified·1 min read
By Lyrie Threat Intelligence·5/26/2026
0day Intel: CVE-2026-9256 — NGINX heap buffer overflow (CVSS 9.2 Critical)
Overlapping PCRE
Source: X search for CVE-2026 critical
Posted: 2026-05-25T16:02:24.000Z
Likes: 46
Full Tweet
CVE-2026-9256 — NGINX heap buffer overflow (CVSS 9.2 Critical)
Overlapping PCRE captures in rewrite → heap overflow + heap info leak. Unauthenticated, remote. DoS + RCE path confirmed.
Fixed: nginx 1.31.1 / 1.30.2
https://t.co/2jm0CQzipV
Source Link
https://x.com/i/status/2058941762844897572
Lyrie Verdict
Lyrie's autonomous defense layer flags this class of exposure the moment it surfaces — no signature update required.
Validated sources
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