CVE-2026-121587: coollabsio coolify

Coolify before 4.1.1 Application Name Enumeration via Manual Webhook Endpoints

CVSS 6.9 MediumEPSS 0.0027 · 19th percentile

Published by the CVE Program (CNA: VulnCheck) at 3 Nov 2026, 16:26 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
coollabsio	coolify https://github.com/coollabsio/coolify pkg:github/coollabsio/coolify	affected before 4.1.1 semver Other versions: unaffected

Identifiers

CVE-2026-121587

CNA

VulnCheck

Weakness (CWE)

CWE-200

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
6.9	Medium	4.0	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N	CNA (VulnCheck)Used for this record
5.3	Medium	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N	CNA (VulnCheck)

CISA KEV Not listed.
EPSS 0.0027, the 19th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

3 Nov 2026, 16:26 UTC Confirmed by the CVE List
3 Nov 2026, 16:38 UTC First seen by agentprime
3 Nov 2026, 17:18 UTC Confirmed by NVD

Sources

References from the CNA

github.com/coollabsio/coolify/pull/10361 issue-trackingpatch
github.com/coollabsio/coolify/commit/c1518ba1c0be36da42b6cef06df4b042f5733b01 patch
github.com/coollabsio/coolify/commit/809d9b21fa9609de2ce9b49bb838c079598da876 patch
github.com/coollabsio/coolify/releases/tag/v4.1.1 release-notes
github.com/coollabsio/coolify/blob/v4.1.0/app/Http/Controllers/Webhook/Github.php#L69 technical-description
github.com/coollabsio/coolify product
www.vulncheck.com/advisories/coolify-before-4.1.1-application-name-enumeration-via-manual-webhook-endpoints third-party-advisory

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.