CVE-2026-121735 json
blueprintUE Self-Hosted Edition before 4.3.4 Non-Expiring Account Confirmation Tokens
published 2026-11-03 5 d ago modified 2026-11-03 5 d ago also EUVD-2026-116593
- cvss
- 3.7
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 13%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- blueprintue blueprintue-self-hosted-edition 4.3.4
Exploit prediction
0.23% chance of exploitation in the next 30 days, higher than 13% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 6.3 | 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 | 3.1 | 3.7 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N |
| CNA | 4.0 | 6.3 | 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| NVD | 3.1 | 3.7 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N |
Affected products
- blueprintue blueprintue-self-hosted-edition
Classification
- Weakness
-
- CWE-613 DEPRECATED: Insufficient Session Expiration
References
-
github.com
/blueprintue/blueprintue-self-hosted-edition/commit/8bba1615bf76b144ac5cd72637c243490f08bc37
patch
-
github.com
/blueprintue/blueprintue-self-hosted-edition/pull/266
patch, issue-tracking
-
github.com
/blueprintue/blueprintue-self-hosted-edition/security/advisories/GHSA-qp6g-7v4v-33r9
vendor-advisory
-
github.com
/blueprintue/blueprintue-self-hosted-edition
product
-
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
-
vulncheck.com
/advisories/blueprintue-self-hosted-edition-before-4.3.4-non-expiring-account-confirmation-tokens
third-party-advisory
Sources
- CVE List CVE-2026-121735
- NVD CVE-2026-121735
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.