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CVE-2026-121735

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

CVSS score

6.3

EPSS probability

—

Risk score

0.6

Published

3 h ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Official patch verified

Etkilenen ürün ve sürüm için yayımlanan güvenlik güncellemesini uygulayın.

Impact on My Inventory

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Vulnerability description

DayBreach AI Explanation

Verified against sources

CVE-2026-121735: blueprintUE Self-Hosted Edition Non-Expiring Account Confirmation Tokens

Sources read

1

Source agreement

Tam uyum

Evidence confidence

%55

Short explanation

blueprintUE Self-Hosted Edition before 4.3.4 contains an insufficient session expiration vulnerability because UserModel::findUserIDWithConfirmedToken ignores confirmed_sent_at.

Why does it matter?

Attackers can use old confirmation links to activate unconfirmed accounts and evade cleanup jobs.

What should be done?

  • Update the software to version 4.3.4 or later
  • Follow vendor advisories
Chain of evidence and sources2 verified claims

blueprintUE Self-Hosted Edition 4.3.4 öncesi sürümler, yetersiz oturum aşımı zafiyeti barındırmaktadır.

S0 · daybreach-canonicalS1 · cvelist

UserModel::findUserIDWithConfirmedToken fonksiyonunun confirmed_sent_at değerini yok sayması bu soruna yol açar.

S0 · daybreach-canonicalS1 · cvelist
Show the technical text from the sources

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.

CVSS vector: 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

CWE: CWE-613

This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-121735 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1blueprintueblueprintue-self-hosted-edition View
Total affected vendors: 1|Products: 1

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
6.3CVSS V4_0MEDIUMCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:NCVE CNA
6.3CVSS V40MEDIUMCVSS: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:XNVD
3.7CVSS V3_1LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:NCVE CNA
3.7CVSS V31LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:NNVD

Patch and Remediation Guide

Solution & Remediation Advisory

Patch verified

4 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

cvelist

Patch Commit

Open source
cvelist

CNA çözüm referansı

Open source
reference

Patch Commit

Open source
reference

Yama veya çözüm referansı

Open source
Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Apply the official update named in the evidence only to the matching product and version.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-121735 is associated with the following CWEs:

CWE-613: Common Weakness Enumeration Entry CWE-613

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-121735 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden
PermissionsGerekmiyor
UserGerekmiyor

Official Sources and Advisories

Patch Commitpatchhttps://github.com/blueprintue/blueprintue-self-hosted-editionvendor-advisoryGitHub Security Advisory (GHSA-qp6g-7v4v-33r9)vendor-advisoryhttps://github.com/blueprintue/blueprintue-self-hosted-edition/pull/266patchhttps://github.com/blueprintue/blueprintue-self-hosted-edition/blob/v4.3.3/app/models/UserModel.php#L361-L368vendor-advisoryblueprintUE v4.3.4 Release Notesvendor-advisoryVulnCheck Advisory: blueprintUE Self-Hosted Edition before 4.3.4 Non-Expiring Account Confirmation Tokensvendor-advisory

CVSS Vector Radar Chart

6.3 / 10
Attack VectorNetworkComplexityLowPrivilegesNoneUser Interact.NoneConfidentialityLowIntegrityNoneAvailabilityNone

Vulnerability Scoring Details

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
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone required
User InteractionNone required
Confidentiality (Gizlilik)Low
Integrity (Bütünlük)None
Availability (Erişilebilirlik)None

Yama doğrulandı

4 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

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Weakness Type (CWE & CAPEC)

CWE-613

Get this vulnerability through the API

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CVE-2026-121735 · blueprintUE Self-Hosted Edition before…