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Vulnerabilities ›

CVE-2026-27651

High

When the ngx_mail_auth_http_module module is enabled on NGINX Plus or NGINX Open Source, undisclosed requests can cause worker processes to terminate. This issue may occur when (1) CRAM-MD5 or APOP au

CWE-476 — Weakness Type

                    Published: Mar 24, 2026                      ·  Modified: Mar 30, 2026                      ·  Source: NVD                

CVSS v3

7.5

🔗 NVD Official

📄 Description (English)

When the ngx_mail_auth_http_module module is enabled on NGINX Plus or NGINX Open Source, undisclosed requests can cause worker processes to terminate. This issue may occur when (1) CRAM-MD5 or APOP authentication is enabled, and (2) the authentication server permits retry by returning the Auth-Wait response header. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

🤖

Queued for AI Analysis

This CVE will be auto-analyzed on the next cron run.

🔗 References & Sources 1

https://my.f5.com/manage/s/article/K000160383

Vendor Advisory

📦 Affected Products / CPE 14 entries

f5:nginx_open_source

f5:nginx_open_source

f5:nginx_open_source

f5:nginx_plus

f5:nginx_plus:r32

f5:nginx_plus:r32

f5:nginx_plus:r32

f5:nginx_plus:r32

f5:nginx_plus:r32

f5:nginx_plus:r35

f5:nginx_plus:r35

f5:nginx_plus:r36

f5:nginx_plus:r36

f5:nginx_plus:r36

📊 CVSS Score

7.5

/ 10.0 — High

📊 CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack VectorN — None / Network

Attack ComplexityL — Low / Local

Privileges RequiredN — None / Network

User InteractionN — None / Network

ScopeU — Unchanged

ConfidentialityN — None / Network

IntegrityN — None / Network

AvailabilityH — High

📋 Quick Facts

Severity High

CVSS Score7.5

CWECWE-476

Exploit No

Patch ✗ No

Published 2026-03-24

Source Feed nvd

🏷️ Tags

CWE-476

🏢 Vendor Advisories

🔗 https://my.f5.com/manage/s/article/K000160383

⚡ Actions

🔗 NVD Official Page ⚡ Exploit-DB Search 🐙 GitHub PoC Search 🎯 MITRE ATT&CK 📊 CVE Details

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