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CVE-2026-43886

Outline is a service that allows for collaborative documentation. From 0.84.0 to 1.6.1, a logic error in OAuthInterface.validateScope() uses Array.some() to validate requested OAuth scopes, causing the function to accept the entire scope array if any single scope is valid. An attacker can smuggle the wildcard * scope by requesting scope=read *, escalating a read-only OAuth token to full unrestricted API access including write, delete, and admin operations. This vulnerability is fixed in 1.7.0.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:f7f78a181013c84dd9e6f3dcc64c8cc80be15180f6638889683d7bb9575c71cf
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"outline","vendor":"outline","versions":[{"status":"affected","version":">= 0.84.0, < 1.7.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:19106566a3adf83cc22a5fd547e4e0502ca93a5a0d5d65e61d7ebb652cd729b3 · sha256:7b48e2573d56f125… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.2,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:19106566a3adf83cc22a5fd547e4e0502ca93a5a0d5d65e61d7ebb652cd729b3 · sha256:7b48e2573d56f125… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-269","description":"CWE-269: Improper Privilege Management","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:19106566a3adf83cc22a5fd547e4e0502ca93a5a0d5d65e61d7ebb652cd729b3 · sha256:7b48e2573d56f125… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"tags":["exploit"],"url":"https://github.com/outline/outline/security/advisories/GHSA-7732-6qrg-wjf4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:19106566a3adf83cc22a5fd547e4e0502ca93a5a0d5d65e61d7ebb652cd729b3 · sha256:7b48e2573d56f125… · /containers/adp/0/references/0
{"name":"https://github.com/outline/outline/security/advisories/GHSA-7732-6qrg-wjf4","tags":["x_refsource_CONFIRM"],"url":"https://github.com/outline/outline/security/advisories/GHSA-7732-6qrg-wjf4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:19106566a3adf83cc22a5fd547e4e0502ca93a5a0d5d65e61d7ebb652cd729b3 · sha256:7b48e2573d56f125… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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