Administrator escalation via auto-submitted admin form
Published Jun 26, 2026 · Updated Jun 26, 2026
Cross-site request forgery in OpenProject before 17.3.3 and version 17.4.0 allows remote authenticated users to grant administrator access. A crafted work package uses an XSS Turbo Stream append action to inject a form; Turbo Drive adds the page's CSRF token, and dispatch_event submits it. A privileged user's browser must render the content, after which user[admin] is posted to /users/:id to change the targeted account's administrator state.
Summary
What happened
Cross-site request forgery in OpenProject before 17.3.3 and version 17.4.0 allows remote authenticated users to grant administrator access. A crafted work package uses an XSS Turbo Stream append action to inject a form; Turbo Drive adds the page's CSRF token, and dispatch_event submits it. A privileged user's browser must render the content, after which user[admin] is posted to /users/:id to change the targeted account's administrator state.
The record
- CVE
- CVE-2026-52784
- Published
- Jun 26, 2026
- Updated
- Jun 26, 2026
- Vendor
- OpenProject GmbH
- Product
- OpenProject
- Classifications
- CWE-352, T1098
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 26, 2026CVE publishedPublication date reported by the CVE source.
- Jun 26, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 17.3.3
- Affected versionversion=>= 17.4.0, < 17.4.1
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo