CVE-2026-123506

5.3 mediumEPSS 0.2%

Medium (5.3) in go-vikunja vikunja. EPSS 0.2% estimated probability of exploitation activity in the next 30 days.

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Severity
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Affected
Versions
References
Your exposure

Vikunja from 2.2.0 before 2.7.1 contains an authorization bypass vulnerability that allows holders of tokens scoped only to projects_webhooks to manage the owner's user-level webhooks by supplying user_id in request bodies. Attackers can register user webhooks to their own receiver to obtain reminders and task payloads from all owner projects, and read, change or delete existing user webhooks.

Severity

CVSS 4.0

5.3 medium

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

CVSS 3.1

5.4 medium

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

EPSS: 0.2% estimated probability of exploitation activity in the next 30 days; 11th percentile. Scored 2026-11-10. A forecast for this CVE across the internet, not for your own systems.
CISA's assessment (SSVC): Exploitation: none · Automatable: no · Technical impact: partial, assessed 2026-11-09. From CISA's Vulnrichment in the CVE List: whether it is exploited, whether exploiting it can be automated, and how much control it gives.
CWE: CWE-863 Incorrect Authorization
OWASP Top 10: A01:2025 Broken Access Control
Published: 2026-11-08 02:16 UTC
Modified: 2026-11-09 14:17 UTC
NVD analysis: Deferred: the NVD does not plan to analyze it
Record from: the NVD, synced 2026-11-09 14:47 UTC

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Affected

go-vikunja:vikunja

Versions

From the CNA's record in the CVE List.

Product	Affected
go-vikunja vikunja	from 2.2.0 before 2.7.1

References

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