CVE-2026-44695
Outline is a service that allows for collaborative documentation.
Published May 11, 2026 · updated Jun 17, 2026 · getoutline outline
Outline is a service that allows for collaborative documentation. Prior to 1.7.1, the Slack integration callback for GET /auth/slack.post accepts an unsigned, session-independent OAuth state value. A third party who can obtain a Slack OAuth code for the same Outline Slack client can make a logged-in Outline user complete the callback and link that user's Outline account to the attacker's Slack team_id and user_id. The linked Slack identity can then use the Slack /outline search command as the victim Outline user. This vulnerability is fixed in 1.7.1.
Code
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No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
May 11, 2026 · NIST NVD
Detected
Outline is a service that allows for collaborative documentation. Prior to 1.7.1, the Slack integration callback for GET /auth/slack.post accepts an unsigned, session-independent OAuth state value. A third party who can obtain a Slack OAuth code for the same Outline Slack client can make a logged-in Outline user complete the callback and link that user's Outline account to the attacker's Slack tea
Jun 17, 2026 · NIST NVD
Updated
Outline is a service that allows for collaborative documentation. Prior to 1.7.1, the Slack integration callback for GET /auth/slack.post accepts an unsigned, session-independent OAuth state value. A third party who can obtain a Slack OAuth code for the same Outline Slack client can make a logged-in Outline user complete the callback and link that user's Outline account to the attacker's Slack tea
Affected
- cpe getoutline/outlineversion unspecified
Sources
- CVE.orgVulnerability recordCVE-2026-44695
Official CVE identifier
cve.org - NIST NVDVulnerability recordCVE-2026-44695
Outline is a service that allows for collaborative documentation. Prior to 1.7.1, the Slack integration callback for GET /auth/slack.post accepts an unsigned, session-independent OAuth state value. A third party who can obtain a Slack OAuth code for the same Outline Slack client
nvd.nist.gov