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CVE-2026-74800

SiYuan before v3.7.4 Stored XSS via assets endpoint PUBLISHED

Description (CNA)

SiYuan before v3.7.4 fails to set Content-Disposition and X-Content-Type-Options headers when serving arbitrary file assets, allowing stored cross-site scripting attacks. Authenticated attackers can upload HTML files as assets and execute scripts with full kernel API access when the workspace owner opens the asset link.

Affected (CNA)

Vendor / productVersions
siyuan-note / siyuanaffected 0 before 3.7.4; unaffected 3.7.4

CWE

CWE-79

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.