CVE-2026-15176

highpriority · track · 32EPSS 0.005 · 43 %ileDEFRUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.52% (43rd) EPSS

CVSS 8.1 · high

Is it mine?

20 products

Check your exposure

Who says so?

3 sources

osv · cert_bund · certfr

EPSS · scored 2026-10-22

A vulnerability exists in NGINX Plus and NGINX Open Source when a location is configured that uses the alias directive together with rewrite and a set or return directive referencing the $request_filename variable. Alternatively, the same result could be achieved when the $request_filename variable is used in an access log format directive. 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.

cvss

Technical severity, 0–10. One row per scoring source.

9.2

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.2–9.2

v3.18.1highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · f5sirt@f5.comexploitability 2.2 · impact 5.9

v4.09.2criticalCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · f5sirt@f5.com

v4.07.2highCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-122US

affected products (20)

Products and version ranges known to be affected.

NGINX NGINX App Protect WAFall versionscert_bundDEcpe:/a:nginx:nginx:app_protect_waf
NGINX NGINX NGINX App Protect DoSall versionscert_bundDEcpe:/a:nginx:nginx:nginx_app_protect_dos
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
NGINX NGINX Plus< 37.0.5.1cert_bundDE
NGINX NGINX Plus< 37.0.7.1cert_bundDE
NGINX NGINX Plus< 37.1.0.1cert_bundDE
NGINX NGINX Plus< 37.2.0.1cert_bundDE
Nginx Nginx≤ JavaScript (njs) <1.0.2cert_bundDE
Nginx Nginx≤ Open Source <1.31.7cert_bundDE
Nginx Nginx≤ Open Source <1.30.6cert_bundDE
Nginx Nginx≤ F5 DoS <4.11.0cert_bundDE
Nginx Nginx≤ F5 WAF <5.14.2cert_bundDE
Nginx Nginx≤ F5 WAF <5.16.0cert_bundDE
Nginx Nginx≤ Gateway Fabric <2.8.0cert_bundDE
Nginx Nginx≤ Ingress Controller <5.7.0cert_bundDE
Nginx Nginx≤ Instance Manager <2.24.0cert_bundDE
Bitnami nginx0.1.29 → 1.30.6osvUSpkg:bitnami/nginx
Bitnami nginx1.31.0 → 1.31.7osvUSpkg:bitnami/nginx
Bitnami nginx-gateway0.1.29 → 1.30.6osvUSpkg:bitnami/nginx-gateway
Bitnami nginx-gateway1.31.0 → 1.31.7osvUSpkg:bitnami/nginx-gateway

advisories (5)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-3948NGINX: Mehrere SchwachstellenDeutsch2026-10-14csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in NGINX NGINX Plus und NGINX ausnutzen, um beliebigen Programmcode auszuführen, Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren und offenzulegen oder einen Denial-of-Service-Zustand auszulösen.
BIT-nginx-2026-15176NGINX ngx_http_core_module vulnerability2026-10-21vendor · osvUS
A vulnerability exists in NGINX Plus and NGINX Open Source when a location is configured that uses the alias directive together with rewrite and a set or return directive referencing the $request_filename variable. Alternatively, the same result could be achieved when the $request_filename variable is used in an access log format directive. 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.
BIT-nginx-gateway-2026-15176NGINX ngx_http_core_module vulnerability2026-10-21vendor · osvUS
A vulnerability exists in NGINX Plus and NGINX Open Source when a location is configured that uses the alias directive together with rewrite and a set or return directive referencing the $request_filename variable. Alternatively, the same result could be achieved when the $request_filename variable is used in an access log format directive. 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.
CERTFR-2026-AVI-1317Multiples vulnérabilités dans les produits F5Français2026-10-15vendor · certfrFR
CERTFR-2026-AVI-1341Multiples vulnérabilités dans les produits F5Français2026-10-19vendor · certfrFR

also known as (2)

Other names and identifiers for this entity.

BIT-nginx-2026-15176osv
BIT-nginx-gateway-2026-15176osv

sources

Which sources assert this record, and when.

osv cert_bund certfr NVD CVE.org MITRE

published 2026-10-14modified 2026-10-15

references (1) nvd

External citations — patches, advisories, analysis.

https://my.f5.com/manage/s/article/K000162416

scry

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