Signal
Critical 18-year-old remote code execution flaw found in NGINX rewrite module
Evidence first: scan the strongest sources, then decide whether to go deeper.
Published 2026-05-14 06:00 UTCUpdated 2026-05-14 23:56 UTC
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Evidence trail (top sources)
top sources (4 domains)domains are deduped. counts indicate coverage, not truth.4 top sources shown
Overview
Security researchers have uncovered a critical heap buffer overflow vulnerability in the NGINX web server's ngx_http_rewrite_module that has existed unnoticed for 18 years. Tracked as CVE-2026-42945 with a CVSS v4 score of 9.2, this flaw allows unauthenticated remote code execution or denial of service.
Entities
DepthFirst AINGINX
Score total
1.43
Momentum 24h
5
Posts
5
Origins
5
Source types
1
Duplicate ratio
0%
Why now
- The flaw was discovered and publicly disclosed in May 2026, prompting urgent patching.
- Patches are available, but many systems remain vulnerable if not updated promptly.
- AI-powered tools are increasingly uncovering long-standing security issues missed by traditional methods.
Why it matters
- NGINX powers nearly one third of all websites, so this flaw risks widespread impact.
- The vulnerability allows unauthenticated remote code execution, a severe security risk.
- Long undetected, it highlights challenges in securing critical open-source infrastructure.
LLM analysis
Topic mix: lowPromo risk: lowSource quality: high
Recurring claims
- A critical heap buffer overflow vulnerability in NGINX's ngx_http_rewrite_module enables remote code execution.
- The vulnerability affects NGINX versions from 0.6.27 to 1.30.0 and has been patched in versions 1.31.0 and 1.30.1.
How sources frame it
- The Hacker News: neutral
All evidence
All evidence
The Hacker News - NGINX rewrite module flaw
thehackernews.com · thehackernews.com · 2026-05-14 06:00 UTC
nginx: CVSS (Max): 8.1
AusCERT - Bulletins · portal.auscert.org.au · 2026-05-14 23:56 UTC
Critical 'NGINX Rift' vulnerability discovered, present for 18 years
SC Media · scworld.com · 2026-05-14 23:38 UTC
AI agent finds 18-year-old remote code execution flaw in Nginx
CSO Online · csoonline.com · 2026-05-14 23:06 UTC
USN-8271-1: nginx vulnerability
Ubuntu Security Notices · ubuntu.com · 2026-05-14 12:03 UTC
Show filters & breakdown
Posts loaded: 0Publishers: 5Origin domains: 5Duplicates: -
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Top publishers (this list)
- thehackernews.com (1)
- AusCERT - Bulletins (1)
- SC Media (1)
- CSO Online (1)
- Ubuntu Security Notices (1)
Top origin domains (this list)
- thehackernews.com (1)
- portal.auscert.org.au (1)
- scworld.com (1)
- csoonline.com (1)
- ubuntu.com (1)