GHSA-c27j-76xg-6x4f: getkirby/cms (CVE-2022-39315)

Package	Ecosystem	Affected	Fixed in
getkirby/cms	Packagist	<3.5.8.2 \|\| >=3.6.0, <3.6.6.2 \|\| >=3.7.0, <3.7.5.1 \|\| >=3.8.0, <3.8.1	3.5.8.2, 3.6.6.2, 3.7.5.1, 3.8.1

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Kirby CMS (getkirby/cms) versions before 3.5.8.2, from 3.6.0 before 3.6.6.2, from 3.7.0 before 3.7.5.1, and from 3.8.0 before 3.8.1 are vulnerable to user enumeration through the login form's brute force protection. An attacker who can reach the login form can submit requests from two or more IP addresses past the trial limit and tell existing accounts from invalid ones, because only existing accounts get blocked and the random delay is skipped once the limit is reached. Upgrade to 3.5.8.2, 3.6.6.2, 3.7.5.1, 3.8.1 or a later version.

Written 5 Nov 2026.

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
6.5	Medium	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N	CNA (GitHub_M)

CISA KEV Not listed.
EPSS 0.0079, the 56th percentile, on 8 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

31 Oct 2026, 14:32 UTC First seen by agentprime
31 Oct 2026, 14:32 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.