Restricted icon disclosure via reusable signed URLs
Published Sep 7, 2026 · Updated Sep 8, 2026
Authorization bypass in JetBrains YouTrack before 2026.2.18634 allows remote authenticated users to disclose restricted project icons. The project-icon delivery path accepts reuse of a signed URL without revalidating access to the restricted project. Possession of a valid signed URL and low-privileged network access are required; the reported consequence is icon disclosure only.
Summary
What happened
Authorization bypass in JetBrains YouTrack before 2026.2.18634 allows remote authenticated users to disclose restricted project icons. The project-icon delivery path accepts reuse of a signed URL without revalidating access to the restricted project. Possession of a valid signed URL and low-privileged network access are required; the reported consequence is icon disclosure only.
The record
- CVE
- CVE-2026-86481
- Published
- Sep 7, 2026
- Updated
- Sep 8, 2026
- Vendor
- JetBrains
- Product
- YouTrack
- Classifications
- CWE-639, T1213
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 7, 2026CVE publishedPublication date reported by the CVE source.
- Sep 8, 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=0 <2026.2.18634
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.
Weakness, pattern, technique
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