Dashboard / CVE-2026-40103

CVE-2026-40103

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 61/100
Published: 2026-04-10 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: None
S: Unchanged
C: None
I: Low
A: Low

Description

Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, Vikunja's scoped API token enforcement for custom project background routes is method-confused. A token with only projects.background can successfully delete a project background, while a token with only projects.background_delete is rejected. This is a scoped-token authorization bypass. This vulnerability is fixed in 2.3.0.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
vikunja vikunja < 2.3.0

References & Advisories (4)

Bug Bounty Relevance

61 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

5.4 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

EPSS — Exploitation Probability

0.22%
Raw Score 0.002220
Percentile 12.8%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00222
2026-10-28
0.00222

Intelligence Sources

nvd ref →

External Links