CVE Explorer

CVE-2026-43889

Outline is a service that allows for collaborative documentation. Prior to 1.7.0, the shares.create API accepts both collectionId and documentId simultaneously and, when published=false, only verifies read access for each—skipping the "share" permission check. A subsequent shares.update authorizes publication using an OR policy (can share collection OR can share document), so an attacker who holds share permission on one unrelated collection can publish a share that exposes an arbitrary document

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:2cdcde3f482af3581d347a1d22dfa7d8a6ac2727ea1099f75bd801050a71c373

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"outline","vendor":"outline","versions":[{"status":"affected","version":"< 1.7.0"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:afc4252c456e8a6286a566cb3557edd6eb5458165a09bb30de57f0ab4755a986 · sha256:e162fdc62e3d33de… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:afc4252c456e8a6286a566cb3557edd6eb5458165a09bb30de57f0ab4755a986 · sha256:e162fdc62e3d33de… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-863","description":"CWE-863: Incorrect Authorization","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:afc4252c456e8a6286a566cb3557edd6eb5458165a09bb30de57f0ab4755a986 · sha256:e162fdc62e3d33de… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions

{"tags":["exploit"],"url":"https://github.com/outline/outline/security/advisories/GHSA-rg4j-pmch-w6pm"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:afc4252c456e8a6286a566cb3557edd6eb5458165a09bb30de57f0ab4755a986 · sha256:e162fdc62e3d33de… · /containers/adp/0/references/0

{"name":"https://github.com/outline/outline/security/advisories/GHSA-rg4j-pmch-w6pm","tags":["x_refsource_CONFIRM"],"url":"https://github.com/outline/outline/security/advisories/GHSA-rg4j-pmch-w6pm"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:afc4252c456e8a6286a566cb3557edd6eb5458165a09bb30de57f0ab4755a986 · sha256:e162fdc62e3d33de… · /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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