Metadata disclosure via unscoped collaboration events
Published Sep 18, 2026 · Updated Sep 18, 2026
Incorrect authorization in SysReptor before 2026.55 allows remote attackers with a public note-share link to read project metadata. The public share consumer joins the project collaboration group, and its event filter forwards client identities, awareness, and deletion events without limiting them to the shared note subtree. Exploitation requires a valid share link and project-member activity; it reveals identities and non-shared note activity, but not note content or write access.
Summary
What happened
Incorrect authorization in SysReptor before 2026.55 allows remote attackers with a public note-share link to read project metadata. The public share consumer joins the project collaboration group, and its event filter forwards client identities, awareness, and deletion events without limiting them to the shared note subtree. Exploitation requires a valid share link and project-member activity; it reveals identities and non-shared note activity, but not note content or write access.
The record
- CVE
- CVE-2026-81178
- Published
- Sep 18, 2026
- Updated
- Sep 18, 2026
- Vendor
- Syslifters GmbH
- Product
- SysReptor
- Classifications
- CWE-863, T1087
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 18, 2026CVE publishedPublication date reported by the CVE source.
- Sep 18, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 2026.55
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.
Activity data is delayed. The latest report is Sep 28, 2026.
Public exploit references
- Vendor advisory WebSocket reproductionfunctional · demonstrated
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Technologies
Your stack
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Your stack
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