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CVE-2026-55570

SiYuan is an open-source personal knowledge management system. Prior to 3.7.0, it does not escape the untrusted fields (name, version, author, description) when they are serialized into the data-obj HTML attribute of each marketplace card. Because the attribute is single-quoted and the value is produced with JSON.stringify() (which does not escape ', <, or >), a package whose name contains a single quote breaks out of the attribute and injects arbitrary HTML. In the desktop client the main Brows
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:fdf443ccde27ec94723e7aac2e1a31fec6c8a9b9d21ebfebe4ec6c8b00c55387
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 3 assertions

{"cweId":"CWE-94","description":"CWE-94: Improper Control of Generation of Code ('Code Injection')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:11b529aa4d3521a6c3fb020e2e753eb721bd07f7009e05404e193e84486fa0dc · sha256:f0af34f9d4c09af9… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-116","description":"CWE-116: Improper Encoding or Escaping of Output","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:11b529aa4d3521a6c3fb020e2e753eb721bd07f7009e05404e193e84486fa0dc · sha256:f0af34f9d4c09af9… · /containers/cna/problemTypes/2/descriptions/0

{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:11b529aa4d3521a6c3fb020e2e753eb721bd07f7009e05404e193e84486fa0dc · sha256:f0af34f9d4c09af9… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"siyuan","vendor":"siyuan-note","versions":[{"status":"affected","version":"< 3.7.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:11b529aa4d3521a6c3fb020e2e753eb721bd07f7009e05404e193e84486fa0dc · sha256:f0af34f9d4c09af9… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:11b529aa4d3521a6c3fb020e2e753eb721bd07f7009e05404e193e84486fa0dc · sha256:f0af34f9d4c09af9… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

3 source assertions
{"cweId":"CWE-94","description":"CWE-94: Improper Control of Generation of Code ('Code Injection')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:11b529aa4d3521a6c3fb020e2e753eb721bd07f7009e05404e193e84486fa0dc · sha256:f0af34f9d4c09af9… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-116","description":"CWE-116: Improper Encoding or Escaping of Output","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:11b529aa4d3521a6c3fb020e2e753eb721bd07f7009e05404e193e84486fa0dc · sha256:f0af34f9d4c09af9… · /containers/cna/problemTypes/2/descriptions/0
{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:11b529aa4d3521a6c3fb020e2e753eb721bd07f7009e05404e193e84486fa0dc · sha256:f0af34f9d4c09af9… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-x88j-wgpr-h22x","tags":["x_refsource_CONFIRM"],"url":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-x88j-wgpr-h22x"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:11b529aa4d3521a6c3fb020e2e753eb721bd07f7009e05404e193e84486fa0dc · sha256:f0af34f9d4c09af9… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-x88j-wgpr-h22x"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:11b529aa4d3521a6c3fb020e2e753eb721bd07f7009e05404e193e84486fa0dc · sha256:f0af34f9d4c09af9… · /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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