CVE-2026-111922 json
Vikunja 2.2.0 before 2.7.0 Permissive CORS Policy Trusting Localhost Origins
published 2026-10-09 30 d ago modified 2026-10-19 20 d ago also GHSA-m687-p538-r5hp , GO-2026-6739 , EUVD-2026-103290
- cvss
- 6.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.1%
- EPSS 0.1% chance of exploitation in 30 days, percentile 4%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- go-vikunja vikunja 2.7.0
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- total
- Assessed
- 20 d ago
Exploit prediction
0.15% chance of exploitation in the next 30 days, higher than 4% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/go-vikunja/vikunja/security/advisories/GHSA-m687-p538-r5hp referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 7.2 | CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N |
| CNA | 3.1 | 6.3 | CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N |
| CNA | 4.0 | 7.2 | CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | code.vikunja.io/api | >=2.2.0, <=2.6.0 all versions |
no fix listed |
Affected products
- go-vikunja vikunja
Classification
- Weakness
-
- CWE-942 Permissive Cross-domain Security Policy with Untrusted Domains
References
-
github.com
/go-vikunja/vikunja/security/advisories/GHSA-m687-p538-r5hp
vendor-advisory, exploit, web, advisory
-
vulncheck.com
/advisories/vikunja-2.2.0-before-2.7.0-permissive-cors-policy-trusting-localhost-origins
third-party-advisory
-
github.com
/go-vikunja/vikunja
package
Sources
- CVE List CVE-2026-111922
- GitHub Advisory GHSA-m687-p538-r5hp
- NVD CVE-2026-111922
- OSV GO-2026-6739
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.