# Outline vulnerabilities Source: https://junglewise.ai/threats/vendors/outline Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Updated: 10 November 2026, 03:07 UTC. Rebuilt every hour. Data: https://junglewise.ai/threats/vendors/outline.json License: CC BY 4.0 with a link back Junglewise Threat Intelligence has tracked 11 vulnerabilities in Outline: 0 in the last 7 days and 3 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-120489, was published on 2 November 2026. 3 vulnerabilities in the last four weeks, up from none in the four before. 1 technology has a page of its own. ## Counts - Last 7 days: 0 - Last 30 days: 3 - Last 90 days: 3 - All time: 11 (0 critical, 0 exploited in the wild) ## About Outline Collaborative knowledge base and note-taking application. ## Latest Outline vulnerabilities - [CVE-2026-120489: Outline incorrect authorization in document publishing](https://junglewise.ai/threats/cve-2026-120489-outline-before-1-12-0-contains-an-incorrect-authorization) (medium, CVSS 4.3, published 2 Nov 2026) - [CVE-2026-120449: Outline improper access control allowing unpublished document reads](https://junglewise.ai/threats/cve-2026-120449-outline-before-1-12-0-contains-an-improper-access-control) (medium, CVSS 5.3, published 2 Nov 2026) - [CVE-2026-113611: Outline improper access revocation in webhook subscriptions](https://junglewise.ai/threats/cve-2026-113611-outline-before-1-8-0-contains-an-improper-access-revocation) (medium, CVSS 4.9, published 20 Oct 2026) - [CVE-2026-54573: Outline authorization bypass via path parsing discrepancy](https://junglewise.ai/threats/cve-2026-54573-outline-authorization-bypass-via-path-parsing-discrepancy) (info, CVSS 5.3, published 25 Jun 2026) - [CVE-2026-44695: Outline account linking bypass in Slack integration callback](https://junglewise.ai/threats/cve-2026-44695-outline-account-linking-bypass-in-slack-integration-callback) (medium, CVSS 5.8, published 11 May 2026) - [CVE-2026-43890: Outline IDOR in subscriptions.create API endpoint](https://junglewise.ai/threats/cve-2026-43890-outline-idor-in-subscriptions-create-api-endpoint) (high, CVSS 7.7, published 11 May 2026) - [CVE-2026-43889: Outline incorrect authorization in shares.create API](https://junglewise.ai/threats/cve-2026-43889-outline-incorrect-authorization-in-shares-create-api) (medium, CVSS 6.5, published 11 May 2026) - [CVE-2026-43888: Outline path traversal via path length truncation in ZipHelper](https://junglewise.ai/threats/cve-2026-43888-outline-path-traversal-via-path-length-truncation-in-ziphelper) (high, CVSS 8.7, published 11 May 2026) - [CVE-2026-43887: Outline stored XSS in comment mentions](https://junglewise.ai/threats/cve-2026-43887-outline-stored-xss-in-comment-mentions) (high, CVSS 7.3, published 11 May 2026) - [CVE-2026-43886: Outline privilege escalation via OAuth scope wildcard smuggling](https://junglewise.ai/threats/cve-2026-43886-outline-privilege-escalation-via-oauth-scope-wildcard-smuggling) (high, CVSS 8.2, published 11 May 2026) - [CVE-2026-41649: Outline IDOR in shares.create API allows cross-workspace document access](https://junglewise.ai/threats/cve-2026-41649-outline-idor-in-shares-create-api-allows-cross-workspace-document) (high, CVSS 7.7, published 28 Apr 2026) ## Most severe Outline vulnerabilities - [CVE-2026-43888: Outline path traversal via path length truncation in ZipHelper](https://junglewise.ai/threats/cve-2026-43888-outline-path-traversal-via-path-length-truncation-in-ziphelper) (high, CVSS 8.7, published 11 May 2026) - [CVE-2026-43886: Outline privilege escalation via OAuth scope wildcard smuggling](https://junglewise.ai/threats/cve-2026-43886-outline-privilege-escalation-via-oauth-scope-wildcard-smuggling) (high, CVSS 8.2, published 11 May 2026) - [CVE-2026-41649: Outline IDOR in shares.create API allows cross-workspace document access](https://junglewise.ai/threats/cve-2026-41649-outline-idor-in-shares-create-api-allows-cross-workspace-document) (high, CVSS 7.7, published 28 Apr 2026) - [CVE-2026-43890: Outline IDOR in subscriptions.create API endpoint](https://junglewise.ai/threats/cve-2026-43890-outline-idor-in-subscriptions-create-api-endpoint) (high, CVSS 7.7, published 11 May 2026) - [CVE-2026-43887: Outline stored XSS in comment mentions](https://junglewise.ai/threats/cve-2026-43887-outline-stored-xss-in-comment-mentions) (high, CVSS 7.3, published 11 May 2026) - [CVE-2026-43889: Outline incorrect authorization in shares.create API](https://junglewise.ai/threats/cve-2026-43889-outline-incorrect-authorization-in-shares-create-api) (medium, CVSS 6.5, published 11 May 2026) - [CVE-2026-44695: Outline account linking bypass in Slack integration callback](https://junglewise.ai/threats/cve-2026-44695-outline-account-linking-bypass-in-slack-integration-callback) (medium, CVSS 5.8, published 11 May 2026) - [CVE-2026-120449: Outline improper access control allowing unpublished document reads](https://junglewise.ai/threats/cve-2026-120449-outline-before-1-12-0-contains-an-improper-access-control) (medium, CVSS 5.3, published 2 Nov 2026) - [CVE-2026-113611: Outline improper access revocation in webhook subscriptions](https://junglewise.ai/threats/cve-2026-113611-outline-before-1-8-0-contains-an-improper-access-revocation) (medium, CVSS 4.9, published 20 Oct 2026) - [CVE-2026-120489: Outline incorrect authorization in document publishing](https://junglewise.ai/threats/cve-2026-120489-outline-before-1-12-0-contains-an-incorrect-authorization) (medium, CVSS 4.3, published 2 Nov 2026) ## Vulnerabilities per week 3 vulnerabilities in the last four weeks, up from none in the four before. | Week of | Vulns | Critical | Exploited | | --- | --- | --- | --- | | 17 Aug 2026 | 0 | 0 | 0 | | 24 Aug 2026 | 0 | 0 | 0 | | 31 Aug 2026 | 0 | 0 | 0 | | 7 Sep 2026 | 0 | 0 | 0 | | 14 Sep 2026 | 0 | 0 | 0 | | 21 Sep 2026 | 0 | 0 | 0 | | 28 Sep 2026 | 0 | 0 | 0 | | 5 Oct 2026 | 0 | 0 | 0 | | 12 Oct 2026 | 0 | 0 | 0 | | 19 Oct 2026 | 1 | 0 | 0 | | 26 Oct 2026 | 0 | 0 | 0 | | 2 Nov 2026 | 2 | 0 | 0 | | 9 Nov 2026 | 0 | 0 | 0 | ## Outline technologies - [Outline](https://junglewise.ai/threats/technologies/outline-outline): 3 vulnerabilities ## Sources NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Outline vulnerabilities", https://junglewise.ai/threats/vendors/outline, 10 November 2026.