CVE-2026-121735: blueprintue blueprintue-self-hosted-edition

blueprintUE Self-Hosted Edition before 4.3.4 Non-Expiring Account Confirmation Tokens

CVSS 6.3 MediumEPSS 0.0023 · 13th percentile

Published by the CVE Program (CNA: VulnCheck) at 3 Nov 2026, 22:55 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
blueprintue	blueprintue-self-hosted-edition pkg:github/blueprintue/blueprintue-self-hosted-edition	affected before 4.3.4 semver Other versions: unaffected

Identifiers

CVE-2026-121735

CNA

VulnCheck

Weakness (CWE)

CWE-613

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
6.3	Medium	4.0	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N	CNA (VulnCheck)Used for this record
3.7	Low	3.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N	CNA (VulnCheck)

CISA KEV Not listed.
EPSS 0.0023, the 13th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

3 Nov 2026, 22:55 UTC Confirmed by the CVE List
3 Nov 2026, 23:03 UTC First seen by agentprime
3 Nov 2026, 23:17 UTC Confirmed by NVD

Sources

References from the CNA

github.com/blueprintue/blueprintue-self-hosted-edition/commit/8bba1615bf76b144ac5cd72637c243490f08bc37 patch
github.com/blueprintue/blueprintue-self-hosted-edition product
github.com/blueprintue/blueprintue-self-hosted-edition/security/advisories/GHSA-qp6g-7v4v-33r9 vendor-advisory
github.com/blueprintue/blueprintue-self-hosted-edition/pull/266 patchissue-tracking
github.com/blueprintue/blueprintue-self-hosted-edition/blob/v4.3.3/app/models/UserModel.php#L361-L368 technical-description
github.com/blueprintue/blueprintue-self-hosted-edition/releases/tag/v4.3.4 release-notes
www.vulncheck.com/advisories/blueprintue-self-hosted-edition-before-4.3.4-non-expiring-account-confirmation-tokens 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.