What is CVE-2026-123504?

CVE-2026-123504 is a medium-severity vulnerability in Go-Vikunja Vikunja, classified under Information Disclosure. CVSS score: 4.3/10. Published 2026-11-08.

How severe is CVE-2026-123504?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Information disclosure in Go-Vikunja Vikunja

CVE-2026-123504

Vikunja from 0.22.0 before 2.7.1 contains an information disclosure vulnerability that allows read-only project members to view full webhook target URLs by listing project webhooks. Attackers can extract incoming-webhook tokens or API keys embedded in target_url values to post to receiving channels or reuse keys until rotated.

Vulnerability class: Information Disclosure

Published 2026-11-08 · last modified 2026-11-08.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Go-Vikunja Vikunja

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

GitHub Security Advisory (GHSA-586f-48mj-3rwr) (vendor-advisory)
VulnCheck Advisory: Vikunja 0.22.0 before 2.7.1 Webhook URL Credential Exposure to Read-Only Members (third-party-advisory)

Frequently asked questions

What is CVE-2026-123504?: CVE-2026-123504 is a medium-severity vulnerability in Go-Vikunja Vikunja, classified under Information Disclosure. CVSS score: 4.3/10. Published 2026-11-08.
How severe is CVE-2026-123504?: Medium severity. CVSS v3 base score is 4.3 out of 10.