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CVE-2026-33476

SiYuan is a personal knowledge management system. Prior to version 3.6.2, the Siyuan kernel exposes an unauthenticated file-serving endpoint under `/appearance/*filepath.` Due to improper path sanitization, attackers can perform directory traversal and read arbitrary files accessible to the server process. Authentication checks explicitly exclude this endpoint, allowing exploitation without valid credentials. Version 3.6.2 fixes this issue.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:920556385314837c1ea8a518eebb3df56088d47d0af2ed5ad463aa91e74fa253
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-22","description":"CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:837b37ec0141e7cb27e262a6dea90110e4002517d8b2b057b4831dca3d64d6a4 · sha256:f1994075d729f80b… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-73","description":"CWE-73: External Control of File Name or Path","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:837b37ec0141e7cb27e262a6dea90110e4002517d8b2b057b4831dca3d64d6a4 · sha256:f1994075d729f80b… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"siyuan","vendor":"siyuan-note","versions":[{"status":"affected","version":"< 3.6.2"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:837b37ec0141e7cb27e262a6dea90110e4002517d8b2b057b4831dca3d64d6a4 · sha256:f1994075d729f80b… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/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:v2:837b37ec0141e7cb27e262a6dea90110e4002517d8b2b057b4831dca3d64d6a4 · sha256:f1994075d729f80b… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-22","description":"CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:837b37ec0141e7cb27e262a6dea90110e4002517d8b2b057b4831dca3d64d6a4 · sha256:f1994075d729f80b… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-73","description":"CWE-73: External Control of File Name or Path","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:837b37ec0141e7cb27e262a6dea90110e4002517d8b2b057b4831dca3d64d6a4 · sha256:f1994075d729f80b… · /containers/cna/problemTypes/1/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/siyuan-note/siyuan/commit/009bb598b3beccc972aa5f1ed88b3b224326bf2a","tags":["x_refsource_MISC"],"url":"https://github.com/siyuan-note/siyuan/commit/009bb598b3beccc972aa5f1ed88b3b224326bf2a"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:837b37ec0141e7cb27e262a6dea90110e4002517d8b2b057b4831dca3d64d6a4 · sha256:f1994075d729f80b… · /containers/cna/references/1
{"tags":["exploit"],"url":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-hhgj-gg9h-rjp7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:837b37ec0141e7cb27e262a6dea90110e4002517d8b2b057b4831dca3d64d6a4 · sha256:f1994075d729f80b… · /containers/adp/0/references/0
{"name":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-hhgj-gg9h-rjp7","tags":["x_refsource_CONFIRM"],"url":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-hhgj-gg9h-rjp7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:837b37ec0141e7cb27e262a6dea90110e4002517d8b2b057b4831dca3d64d6a4 · sha256:f1994075d729f80b… · /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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