CVE-2026-42174 json
Kirby: User avatar creation, replacement and deletion are not gated by user update permissions
published 2026-05-04 6 mo ago modified 2026-07-24 3 mo ago also EUVD-2026-28890 , GHSA-39cp-6679-8xv2
- cvss
- 4.3
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 14%
- public exploits
- 0
- none known
Summary
Kirby is an open-source content management system. Prior to versions 4.9.0 and 5.4.0, user avatar creation, replacement and deletion are not gated by user update permissions. This issue has been patched in versions 4.9.0 and 5.4.0.
Patch / fix
- packagist getkirby/cms 4.9.0, 5.4.0
- getkirby kirby 4.9.0, 5.4.0
- getkirby panel 4.9.0, 5.4.0
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 5 mo ago
Exploit prediction
0.24% chance of exploitation in the next 30 days, higher than 14% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 5.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N |
| CNA | 4.0 | 5.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/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 |
| NVD | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | getkirby/cms | <4.9.0 >=5.0.0, <5.4.0 |
4.9.0 5.4.0 |
Affected products
- getkirby kirby
Classification
- Weakness
-
- CWE-862 Missing Authorization
References
-
github.com
/getkirby/kirby/security/advisories/GHSA-39cp-6679-8xv2
web, patch, vendor-advisory
-
github.com
/getkirby/kirby/releases/tag/4.9.0
web, release-notes
-
github.com
/getkirby/kirby/releases/tag/5.4.0
web, release-notes
-
nvd.nist.gov
/vuln/detail/CVE-2026-42174
advisory
-
github.com
/getkirby/kirby
package
Sources
- CVE List CVE-2026-42174
- GitHub Advisory GHSA-39cp-6679-8xv2
- NVD CVE-2026-42174
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.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.