CVE-2026-123513

HIGH
MEDIUM Priority: 0.02 BB Relevance: 55/100
Published: 2026-11-08 Modified: 2026-11-08 First seen: 2026-11-08 Status: active

Attack Surface

Network No Auth Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: High
PR: None
UI: Passive
S: X
AT: Present
VC: High
VI: High
VA: None

Description

Vikunja before 2.7.1 contains a credential exposure vulnerability that allows attackers to steal stored auth tokens by inducing users to switch the frontend API URL. Because checkAndSetApiUrl leaves origin-independent localStorage tokens in place, the bearer token and desktop OAuth refresh token are sent to the attacker's server, enabling account takeover.

Affected Software (1)

VendorProductVersion
go-vikunja vikunja 0 < 2.7.1

Bug Bounty Relevance

55 / 100
✓ Network accessible
✓ No authentication

CVSS Score

7.6 / 10.0 v4.0
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/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

EPSS — Exploitation Probability

0.25%
Raw Score 0.002500
Percentile 16.5%
Date 2026-11-08

Intelligence Sources

mitre ref →
nvd ref →