CVE Explorer
CVE-2026-40922
SiYuan is an open-source personal knowledge management system. In versions 3.6.1 through 3.6.3, a prior fix for XSS in bazaar README rendering (incomplete fix for CVE-2026-33066) enabled the Lute HTML sanitizer, but the sanitizer does not block iframe tags, and its URL-prefix blocklist does not effectively filter srcdoc attributes which contain raw HTML rather than URLs. A malicious bazaar package author can include an iframe with a srcdoc attribute containing embedded scripts in their README. W
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":"< 3.6.4"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:a447582f2e9c430aa970d1d384a08eb031a62717052ce29f7818e3c29ee219c2 · sha256:77e279eff7bb3176… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.3,"baseSeverity":"MEDIUM","privilegesRequired":"LOW","subAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:a447582f2e9c430aa970d1d384a08eb031a62717052ce29f7818e3c29ee219c2 · sha256:77e279eff7bb3176… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:a447582f2e9c430aa970d1d384a08eb031a62717052ce29f7818e3c29ee219c2 · sha256:77e279eff7bb3176… · /containers/cna/problemTypes/0/descriptions/0
Source references
5 source assertions{"name":"https://github.com/advisories/GHSA-4663-4mpg-879v","tags":["x_refsource_MISC"],"url":"https://github.com/advisories/GHSA-4663-4mpg-879v"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:a447582f2e9c430aa970d1d384a08eb031a62717052ce29f7818e3c29ee219c2 · sha256:77e279eff7bb3176… · /containers/cna/references/2
{"name":"https://github.com/siyuan-note/siyuan/commit/b382f50e1880ed996364509de5a10a72d7409428","tags":["x_refsource_MISC"],"url":"https://github.com/siyuan-note/siyuan/commit/b382f50e1880ed996364509de5a10a72d7409428"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:a447582f2e9c430aa970d1d384a08eb031a62717052ce29f7818e3c29ee219c2 · sha256:77e279eff7bb3176… · /containers/cna/references/1
{"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_v5referenceurn:baitaphish:normalized-source-record:v2:a447582f2e9c430aa970d1d384a08eb031a62717052ce29f7818e3c29ee219c2 · sha256:77e279eff7bb3176… · /containers/cna/references/3
{"tags":["exploit"],"url":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-8q5w-mmxf-48jg"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:a447582f2e9c430aa970d1d384a08eb031a62717052ce29f7818e3c29ee219c2 · sha256:77e279eff7bb3176… · /containers/adp/0/references/0
{"name":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-8q5w-mmxf-48jg","tags":["x_refsource_CONFIRM"],"url":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-8q5w-mmxf-48jg"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:a447582f2e9c430aa970d1d384a08eb031a62717052ce29f7818e3c29ee219c2 · sha256:77e279eff7bb3176… · /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.