Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Kirby CMS (Packagist getkirby/cms) versions before 4.9.1, and versions from 5.0.0 before 5.4.1, are affected. An attacker who is an authenticated Panel user can include arbitrary model methods in collection queries sent through certain REST API search and collection endpoints, which can disclose data such as password hashes or the server's filesystem path, or trigger actions such as deleting queried models or logging in as another user, depending on the user's permissions. Upgrade to Kirby 4.9.1 or 5.4.1, or a later version.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 8.7 | High | 4.0 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0049, the 42nd percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 13:59 UTC First seen by agentprime
- 31 Oct 2026, 13:59 UTC Confirmed by OSV