CVE-2026-93479

LOWCVSS 9.2 · CRITICAL

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD 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.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-122

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

STABLE

Threat summary

  • 5 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Peaked 1d ago at 3 mentions (2026-10-14); latest day: 2
  • 5 total mentions across 2 days

Deep dive

Activity timeline5 mentions / 2d
01223Mentions · 2026-10-14: 3Mentions · 2026-10-15: 210-1410-15
Referenced assets11 URLs
Full discourse5 posts
  • Netlas.io@Netlas_io

    CVE-2026-97205, CVE-2026-93479, and CVE-2026-15176: Three new vulnerabilities in NGINX, 9.2 rating ‍🔥 F5 has disclosed three new vulnerabilities in NGINX Plus and NGINX Open Source. All of them expose the data plane to remote DoS attacks and potential RCE. An unauthenticated attacker can execute code on systems with Address Space Layout Randomization (ASLR) disabled or when the attacker can bypass ASLR. 👉 https://nt.ls/Jv7X3

    22019101.2K
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  • kokumօtօ@__kokumoto

    NGINXで複数の深刻な脆弱性が修正。CVE-2026-97205, CVE-2026-93479, CVE-2026-15176の3件で、いずれもメモリ安全性関連。CVSSv3スコア8.1、CVSSv4スコア9.2。クラッシュのほか、ASLRが別途突破された場合には遠隔コード実行の可能性。 https://cybersecuritynews.com/multiple-nginx-vulnerabilities/

    0601151.0K
    7.8K followersView on X
  • Daily CyberSecurity@Daily_CyberSec

    F5 patched three NGINX vulnerabilities (CVE-2026-97205, CVE-2026-93479, CVE-2026-15176) rated 9.2 Critical in F5 NGINX Plus and Open Source. Upgrade today. #NGINX #F5Networks #CVE202697205 #CVE202693479 #CVE202615176 #Cybersecurity #InfoSec https://securityonline.info/f5-patches-three-critical-nginx-vulnerabilities/

    040124705
    13.0K followersView on X
  • ThreatWire@ThreatWire_

    🛠️ SECURITY UPDATE — F5 NGINX Three memory flaws rated CVSS 4.0 9.2 (Critical) by F5 in NGINX Plus and Open Source. http://nginx.org rates them medium. CVE-2026-97205 • CVE-2026-93479 CVE-2026-15176 Impact: crash a worker with crafted HTTP requests. Code execution only if ASLR is off or bypassed. Each needs a non-default config. ✅ Fixed (Oct 14): • OSS: 1.31.7 / 1.30.6 • Plus: 37.1.0.1 / 37.0.5.1 • Plus R33–R36: no fix yet • Not in CISA KEV • No known exploitation • No public PoC Update NGINX, and check whether AIO, map/regex, or alias+rewrite are in use. Full breakdown 👇 https://www.threatwire.tech/news/f5-patches-three-nginx-memory-flaws-rated-cvss-9-2 #NGINX #F5 #CVE #CyberSecurity #Infosec #PatchNow

    00051576
    1.9K followersView on X
  • Hacking Team@HackingTeam77

    CVE-2026-97205, CVE-2026-93479, and CVE-2026-15176: Three new vulnerabilities in NGINX, 9.2 rating ‍🔥 F5 has disclosed three new vulnerabilities in NGINX Plus and NGINX Open Source. All of them expose the data plane to remote DoS attacks and potential RCE. An unauthenticated attacker can execute code on systems with Address Space Layout Randomization (ASLR) disabled or when the attacker can bypass ASLR. Search at http://Netlas.io: 👉 Link: https://nt.ls/Jv7X3 👉 Dork: http://tag.name:"nginx" Vendor advisories: https://my.f5.com/manage/s/article/K000162608 https://my.f5.com/manage/s/article/K000162607 https://my.f5.com/manage/s/article/K000162416

    0000020
    2.3K followersView on X

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