CVE-2026-121735

LOW 3.7

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

CVSS Score

3.7

EPSS Score

0.0%

EPSS Percentile

0th

blueprintUE self-hosted edition before 4.3.4 contains an insufficient session expiration vulnerability that allows attackers to confirm accounts using stale tokens because UserModel::findUserIDWithConfirmedToken ignores confirmed_sent_at. Attackers who obtain an old confirmation link from a compromised mailbox, backup, or forwarded mail can activate unconfirmed accounts and evade the unconfirmed-account cleanup job.

CWE	CWE-613
Vendor	blueprintue
Product	blueprintue-self-hosted-edition
Published	Nov 3, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Affected Versions

blueprintue / blueprintue-self-hosted-edition

0 < 4.3.4

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/blueprintue/blueprintue-self-hosted-edition/commit/8bba1615bf76b144ac5cd72637c243490f08bc37 github.com: https://github.com/blueprintue/blueprintue-self-hosted-edition github.com: https://github.com/blueprintue/blueprintue-self-hosted-edition/security/advisories/GHSA-qp6g-7v4v-33r9 github.com: https://github.com/blueprintue/blueprintue-self-hosted-edition/pull/266 github.com: https://github.com/blueprintue/blueprintue-self-hosted-edition/blob/v4.3.3/app/models/UserModel.php#L361-L368 github.com: https://github.com/blueprintue/blueprintue-self-hosted-edition/releases/tag/v4.3.4 vulncheck.com: https://www.vulncheck.com/advisories/blueprintue-self-hosted-edition-before-4.3.4-non-expiring-account-confirmation-tokens

Credits

Farhan Khan rancoud