PatchTheCVECVE-2026-28506: Outline is a service that allows for collaborative documentation
CVE-2026-28506 is a medium-severity flaw (CVSS 4.3) affecting outline. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Outline is a service that allows for collaborative documentation. Prior to 1.5.0, the events.list API endpoint, used for retrieving activity logs, contains a logic flaw in its filtering mechanism. It allows any authenticated user to retrieve activity events associated with documents that have no collection (e.g., Private Drafts, Deleted Documents), regardless of the user's actual permissions on those documents. While the document content is not d
Why this priority
- Public exploit reference
A fixed release or distro patch exists.
Risk facts
| CVSS score | 4.3 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.2% (top 85%) |
| CISA exploited list | No |
| Weakness | CWE-200 |
| Published | 2026-03-17 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-28506?
outline: upgrade to 1.5.0. Exact commands for each OS are on this page.
Is CVE-2026-28506 being exploited?
CVE-2026-28506 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-28506 affect?
CVE-2026-28506 affects outline. Severity is medium (CVSS 4.3). Outline is a service that allows for collaborative documentation. Prior to 1.5.0, the events.list API endpoint, used for retrieving activity logs, contains a logic flaw in its filtering mechanism. It allows any authenticated user to retriev
How urgent is CVE-2026-28506?
Priority 24/100. Public exploit reference
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