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CVE

CVE-2026-24775

OpenProject is an open-source, web-based project management software. In the new editor for collaborative documents base

OpenProject is an open-source, web-based project management software. In the new editor for collaborative documents based on BlockNote, OpenProject maintainers added a custom extension in OpenProject version 17.0.0 that allows to mention OpenProject work packages in the document. To show work package details, the editor loads details about the work package via the OpenProject API.

For this API call, the extension to the BlockNote editor did not properly validate the given work package ID to be only a number. This allowed an attacker to generate a document with relative links that upon opening could make arbitrary GET requests to any URL within the OpenProject instance. This issue was patched in version 0.0.22 of op-blocknote-extensions, which was shipped with OpenProject 17.0.2.

If users cannot update immediately to version 17.0.2 of OpenProject, administrators can disable collaborative document editing in Settings - Documents - Real time collaboration - Disable.

MEDIUM · CVSS 6.3 EPSS 0.00031
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-345Insufficient Verification of Data Authenticity
▤

Affected Products & Versions

1
openproject>= 17.0.0 and < 17.0.2
▣

Scoring & Timeline

6.3
MEDIUM · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD28 Jan 2026 · 07:16 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/opf/op-blocknote-extensions/releases/tag/v0.0.22Release Notes
https://github.com/opf/openproject/security/advisories/GHSA-35c6-x276-2pvcPatchVendor Advisory
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