Detections
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SCA: security update for code.vikunja.io/api (GHSA-m469-88xx-8rx2)

high Tenable Cloud Security Plugin ID 474104

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - Vikunja before 2.6.0 contains an authentication bypass vulnerability in CalDAV BasicAuth endpoints that
 lack rate limiting protection. Remote unauthenticated attackers can issue unbounded credential-guessing
 requests against /dav, /.well-known, and /feeds routes to bypass the instance's anti-brute-force controls
 and compromise password-only accounts. (CVE-2026-91973)

Solution

Update the code.vikunja.io/api library and its related packages to version 2.6.0 or later.

See Also

https://github.com/advisories/GHSA-m469-88xx-8rx2

Plugin Details

Severity: High

ID: 474104

Version: Revision 1.1

Type: Local

Family: SCA Checks

Published: 10/10/2026

Updated: 10/10/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.61

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:N

CVSS Score Source: CVE-2026-91973

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: High

Base Score: 8.7

Threat Score: 6.6

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 10/9/2026

Vulnerability Publication Date: 9/15/2026

Reference Information

CVE: CVE-2026-91973

cwe: CWE-307