P4Verified

CVE-2026-34840: oneuptime before 10.0.42 (exclusive), < 10.0.42

CVE-2026-34840. CVSS 3.1 base score 8.1 (HIGH, Vendor/CNA). EPSS 0.00343 (percentile 0.25563), scored 2026-10-05.

Affected technology

oneuptime · before 10.0.42 (exclusive)
hackerbay

oneuptime · < 10.0.42
OneUptime

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · Low privileges required · No user interaction required

What an attacker can do

An attacker can prepend an unsigned assertion containing an arbitrary identity before a legitimately signed assertion, resulting in authentication bypass. Vendor/CNA’s CVSS 3.1 assessment (base score 8.1/10) rates confidentiality and integrity impact as high; availability impact as none.

Published 2026-10-07 02:35:17.798710+00:00

CWE: CWE-347
CCR priority: 32.5 /100 (P4)
CVSS 3.1: 8.1 /10 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N · Vendor/CNA
EPSS: 0.00343 · percentile 0.25563 · 2026-10-05
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-07 02:34:12.333111+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-34840.html