CVE-2026-44695 - Outline: Slack OAuth state can link a victim Outline account to an attacker Slack identity
CVE ID :CVE-2026-44695
Published : May 11, 2026, 10:22 p.m. | 24 minutes ago
Description :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.
Severity: 5.8 | MEDIUM
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Published : May 11, 2026, 10:22 p.m. | 24 minutes ago
Description :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.
Severity: 5.8 | MEDIUM
Visit the link for more details, such as CVSS details, affected products, timeline, and more...