What is GHSA-phph-c358-5mwm?

GHSA-phph-c358-5mwm is a security advisory published by GitHub Security Advisories with Medium severity. Vikunja before 2.6.0 contains an API token scope bypass vulnerability in task read endpoints...

Which CVE IDs does GHSA-phph-c358-5mwm cover?

GHSA-phph-c358-5mwm covers the following CVE IDs: CVE-2026-91983. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-phph-c358-5mwm?

GHSA-phph-c358-5mwm has a CVSS v3 base score of 4.3, published by GitHub Security Advisories.

GHSA-phph-c358-5mwmMediumCVSS 4.3

Vikunja before 2.6.0 contains an API token scope bypass vulnerability in task read endpoints...

Vendor

GitHub Security Advisories

Published

September 15, 2026

Last Modified

September 15, 2026

🔗 CVE IDs covered (1)

CVE-2026-91983 →

📋 Description

Vikunja before 2.6.0 contains an API token scope bypass vulnerability in task read endpoints where authorization fails to inspect query string parameters. Attackers with limited token scopes can use the expand parameter to access restricted data like comments, reactions, and time entries without proper permission verification.

🔗 References (4)

https://github.com/go-vikunja/vikunja/security/advisories/GHSA-9rg3-v78m-26q8
https://nvd.nist.gov/vuln/detail/CVE-2026-91983
https://www.vulncheck.com/advisories/vikunja-before-2.6.0-api-token-scope-bypass-via-expand-parameter
https://github.com/advisories/GHSA-phph-c358-5mwm