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URL: https://nvd.nist.gov/vuln/detail/CVE-2026-27654

⇱ NVD - CVE-2026-27654

  1. Vulnerabilities

CVE-2026-27654 Detail

Description

NGINX Open Source and NGINX Plus have a vulnerability in the ngx_http_dav_module module that might allow an attacker to trigger a buffer overflow to the NGINX worker process; this vulnerability may result in termination of the NGINX worker process or modification of source or destination file names outside the document root. This issue affects NGINX Open Source and NGINX Plus when the configuration file uses DAV module MOVE or COPY methods, prefix location (nonregular expression location configuration), and alias directives. The integrity impact is constrained because the NGINX worker process user has low privileges and does not have access to the entire system. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NVD assessment not yet provided.

CVSS-B 8.8 HIGH
Vector:  CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://my.f5.com/manage/s/article/K000160382 F5 Networks Vendor Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-122 Heap-based Buffer Overflow F5 Networks  

Known Affected Software Configurations Switch to CPE 2.2

CPEs loading, please wait.

Denotes Vulnerable Software
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Change History

4 change records found show changes

CVE Modified by CISA-ADP 6/17/2026 6:27:28 AM

Action Type Old Value New Value
Added SSVC 
{"timestamp":"2026-03-24T15:14:50.235649Z","id":"CVE-2026-27654","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}

CVE Modified by F5 Networks 6/17/2026 6:27:28 AM

Action Type Old Value New Value
Added Affected 
[{"vendor":"F5","product":"NGINX Open Source","defaultStatus":"unknown","modules":["ngx_http_dav_module"],"versions":[{"version":"1.29.0","lessThan":"1.29.7","versionType":"semver","status":"affected"},{"version":"0.5.13","lessThan":"1.28.3","versionType":"semver","status":"affected"}]},{"vendor":"F5","product":"NGINX Plus","defaultStatus":"unknown","modules":["ngx_http_dav_module"],"versions":[{"version":"R36","lessThan":"R36 P3","versionType":"custom","status":"affected"},{"version":"R35","lessThan":"R35 P2","versionType":"custom","status":"affected"},{"version":"R34","lessThan":"*","versionType":"custom","status":"affected"},{"version":"R33","lessThan":"*","versionType":"custom","status":"affected"},{"version":"R32","lessThan":"R32 P5","versionType":"custom","status":"affected"}]}]

Initial Analysis by NIST 3/26/2026 5:16:16 PM

Action Type Old Value New Value
Added CPE Configuration 
OR
 *cpe:2.3:a:f5:nginx_open_source:*:*:*:*:*:*:*:* versions from (including) 0.5.13 up to (including) 0.9.7
 *cpe:2.3:a:f5:nginx_open_source:*:*:*:*:*:*:*:* versions from (including) 1.29.0 up to (excluding) 1.29.7
 *cpe:2.3:a:f5:nginx_open_source:*:*:*:*:*:*:*:* versions from (including) 1.0.0 up to (excluding) 1.28.3
Added CPE Configuration 
OR
 *cpe:2.3:a:f5:nginx_plus:r32:p1:*:*:*:*:*:*
 *cpe:2.3:a:f5:nginx_plus:r32:p2:*:*:*:*:*:*
 *cpe:2.3:a:f5:nginx_plus:r33:p1:*:*:*:*:*:*
 *cpe:2.3:a:f5:nginx_plus:r33:p2:*:*:*:*:*:*
 *cpe:2.3:a:f5:nginx_plus:r34:p1:*:*:*:*:*:*
 *cpe:2.3:a:f5:nginx_plus:r32:p3:*:*:*:*:*:*
 *cpe:2.3:a:f5:nginx_plus:r33:p3:*:*:*:*:*:*
 *cpe:2.3:a:f5:nginx_plus:r34:p2:*:*:*:*:*:*
 *cpe:2.3:a:f5:nginx_plus:r36:p1:*:*:*:*:*:*
 *cpe:2.3:a:f5:nginx_plus:r33:*:*:*:*:*:*:*
 *cpe:2.3:a:f5:nginx_plus:r34:*:*:*:*:*:*:*
 *cpe:2.3:a:f5:nginx_plus:r35:p1:*:*:*:*:*:*
 *cpe:2.3:a:f5:nginx_plus:r36:*:*:*:*:*:*:*
 *cpe:2.3:a:f5:nginx_plus:r36:p2:*:*:*:*:*:*
 *cpe:2.3:a:f5:nginx_plus:r32:p4:*:*:*:*:*:*
 *cpe:2.3:a:f5:nginx_plus:r35:*:*:*:*:*:*:*
Added Reference Type 
F5 Networks: https://my.f5.com/manage/s/article/K000160382 Types: Vendor Advisory

New CVE Received from F5 Networks 3/24/2026 11:16:33 AM

Action Type Old Value New Value
Added Description 
NGINX Open Source and NGINX Plus have a vulnerability in the ngx_http_dav_module module that might allow an attacker to trigger a buffer overflow to the NGINX worker process; this vulnerability may result in termination of the NGINX worker process or modification of source or destination file names outside the document root. This issue affects NGINX Open Source and NGINX Plus when the configuration file uses DAV module MOVE or COPY methods, prefix location (nonregular expression location configuration), and alias directives. The integrity impact is constrained because the NGINX worker process user has low privileges and does not have access to the entire system. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Added CVSS V4.0 
AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/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:X
Added CVSS V3.1 
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Added CWE 
CWE-122
Added Reference 
https://my.f5.com/manage/s/article/K000160382

Quick Info

CVE Dictionary Entry:
CVE-2026-27654
NVD Published Date:
03/24/2026
NVD Last Modified:
06/17/2026
Source:
F5 Networks