CVE-2026-91972: Vikunja before 2.6.0 Authentication Bypass via Unthrottled API
go-vikunja · vikunja
Fixed in 2.6.0 · Affected: go-vikunja vikunja before 2.6.0 · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 50% of scored CVEs
DescriptionCVE.org
Vikunja versions before 2.6.0 fail to apply rate limiting to /api/v2 public authentication endpoints including login, register, password-reset, and OAuth token routes. Remote unauthenticated attackers can perform unbounded credential guessing, account enumeration, and password-reset flooding attacks without throttling restrictions.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- go-vikunja · vikunjabefore 2.6.0
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- go-vikunja
- Published
- September 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-91972 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.