Vulnerability record
CVE-2026-126659
The short answer
CVE-2026-126659 affects blueprintue blueprintue-self-hosted-edition and is rated high (CVSS 8.7). It is not in CISA's Known Exploited Vulnerabilities catalog.
What it is
BlueprintUE Self-Hosted Edition 1.0.0 before 4.3.5 contains a resource exhaustion vulnerability that allows unauthenticated attackers to fill server storage by repeatedly creating anonymous blueprints. Attackers can send large requests to HomeController::doProcessCreateBlueprint() with a 'never' expiration, bypassing purges to fill the disk and deny service.
Weakness: CWE-770.
Severity
8.7 high
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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
Exploited (CISA KEV)
Not listed
CISA lists confirmed exploitation only
EPSS, next 30 days
No score
FIRST scores CVEs within a day of publication
How it can be exploited
- Attack vector
- Network
- Attack complexity
- Low
- Attack requirements
- None
- Privileges required
- None
- User interaction
- None
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Affected products
blueprintue-self-hosted-edition. NVD's record lists the exact affected versions.
References
- github.com/blueprintue/blueprintue-self-hosted-edition/blob/v4.3.4/app/controllers/www/HomeController.php#L151-L214
- github.com/blueprintue/blueprintue-self-hosted-edition/commit/0709b39851bf58febccf0bc74b88fa86070410de
- github.com/blueprintue/blueprintue-self-hosted-edition/pull/268
- github.com/blueprintue/blueprintue-self-hosted-edition/releases/tag/v4.3.5
- github.com/blueprintue/blueprintue-self-hosted-edition/security/advisories/GHSA-q2vm-p36g-w596
- www.vulncheck.com/advisories/blueprintue-self-hosted-edition-1.0.0-before-4.3.5-storage-exhaustion-via-anonymous-blueprints
Questions
Is CVE-2026-126659 being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog as of 2026-11-11.
How do I fix CVE-2026-126659?
Follow the vendor advisory in the references below. NVD lists the affected versions under its configurations.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Received. The description is NVD's text, quoted as published.
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