CVE-2026-73251: mongoose before 7.23 (exclusive), < 7.23

CVE-2026-73251. CVSS 3.1 base score 9.1 (CRITICAL, NVD). EPSS 0.00193 (percentile 0.08336), scored 17-Oct-2026.

Affected technology

mongoose · before 7.23 (exclusive)
cesanta

mongoose · < 7.23
cesanta

Component: Not specified by the source
Function: stores

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · No privileges required · No user interaction required

What an attacker can do

A network attacker can impersonate a TLS server to a Mongoose client configured with a multi-certificate CA bundle. Vendor/CNA’s CVSS 4.0 assessment (base score 9.3/10) rates confidentiality and integrity impact as high; availability impact as none.

Published 18-Oct-2026 20:24 UTC

CWE: CWE-295
CCR priority: 36.4 /100 (P4)
CVSS 3.1: 9.1 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N · NVD
EPSS: 0.00193 · percentile 0.08336 · 2026-10-17
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-18 20:23:06.032219+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-73251.html