Vulnerability · Published Oct 17, 2026 · Assigned by VulnCheck
CVE-2026-111922Vikunja 2.2.0 before 2.7.0 Permissive CORS Policy Trusting Localhost Origins
Medium 6.3
In plain English
A medium-severity security flaw in vikunja from go-vikunja. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 4% of all known vulnerabilities).
Severity (CVSS 3.1)6.3Medium
Exploit odds (30 days)0.1%top 95.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
Vikunja from 2.2.0 before 2.7.0 contains a permissive CORS configuration that trusts every localhost and 127.0.0.1 port with credentials, even when service.publicurl is set. Attackers controlling a page on any localhost port can send a credentialed request to the token refresh endpoint and read the returned bearer JWT to take over the logged-in user's account.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | code.vikunja.io/api | no fix listed | GHSA-m687-p538-r5hp |
| Go | code.vikunja.io/api | no fix listed | GO-2026-6739 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| go-vikunja | vikunja | 2.2.0 – before 2.7.0 |
Weakness: CWE-942 · Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
References
- GitHub Security Advisory (GHSA-m687-p538-r5hp) vendor-advisory
- VulnCheck Advisory: Vikunja 2.2.0 before 2.7.0 Permissive CORS Policy Trusting Localhost Origins third-party-advisory