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CVE-2026-40259

SiYuan is an open-source personal knowledge management system. In versions 3.6.3 and below, the /api/av/removeUnusedAttributeView endpoint is protected only by generic authentication that accepts publish-service RoleReader tokens. The handler passes a caller-controlled id directly to a model function that unconditionally deletes the corresponding attribute view file from the workspace without verifying that the caller has write privileges or that the target attribute view is actually unused. An
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:f58069b741e3a0b09604ec883fa21c0538c6a36963ae3657803c8524a97bff20
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"siyuan","vendor":"siyuan-note","versions":[{"status":"affected","version":"< 0.0.0-20260407035653-2f416e5253f1"},{"status":"affected","version":"< 3.6.4"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:3a9892e43f7ed88f619f45c98f2d8290b7f6be77b70d8c61e0ac790b643de1be · sha256:5c3adcda0500816f… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.1,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:3a9892e43f7ed88f619f45c98f2d8290b7f6be77b70d8c61e0ac790b643de1be · sha256:5c3adcda0500816f… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-285","description":"CWE-285: Improper Authorization","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:3a9892e43f7ed88f619f45c98f2d8290b7f6be77b70d8c61e0ac790b643de1be · sha256:5c3adcda0500816f… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/siyuan-note/siyuan/releases/tag/v3.6.4","tags":["x_refsource_MISC"],"url":"https://github.com/siyuan-note/siyuan/releases/tag/v3.6.4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3a9892e43f7ed88f619f45c98f2d8290b7f6be77b70d8c61e0ac790b643de1be · sha256:5c3adcda0500816f… · /containers/cna/references/1
{"name":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-7m5h-w69j-qggg","tags":["x_refsource_CONFIRM"],"url":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-7m5h-w69j-qggg"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3a9892e43f7ed88f619f45c98f2d8290b7f6be77b70d8c61e0ac790b643de1be · sha256:5c3adcda0500816f… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-7m5h-w69j-qggg"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3a9892e43f7ed88f619f45c98f2d8290b7f6be77b70d8c61e0ac790b643de1be · sha256:5c3adcda0500816f… · /containers/adp/0/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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