CVE-2026-61607 Grav API Plugin: Stored XSS via SVG Upload - API Media Pipeline Bypasses Sanitizer

Grav API Plugin is a RESTful API for Grav CMS that provides full headless access to your site's content. Prior to 1.0.2, the Grav API plugin POST /api/v1/media pipeline in HandlesMediaUploads::processUploadedFile validates an SVG filename extension but does not invoke Security::sanitizeSVG. An...

GHSA-73G7-86QR-JRG3 SiYuan vulnerable to reflected XSS via SVG namespace prefix bypass in SanitizeSVG (getDynamicIcon, unauthenticated)

Summary The SanitizeSVG function introduced in v3.6.0 to fix XSS in the unauthenticated /api/icon/getDynamicIcon endpoint can be bypassed by using namespace-prefixed element names such as . The Go HTML5 parser records the element's tag as "x:script" rather than "script", so the tag check passes i...

CVE-2026-34605

SiYuan is a personal knowledge management system. From version 3.6.0 to before version 3.6.2, the SanitizeSVG function introduced in version 3.6.0 to fix XSS in the unauthenticated /api/icon/getDynamicIcon endpoint can be bypassed by using namespace-prefixed element names such as . The Go HTML5...

CVE-2026-34605 SiYuan: Reflected XSS via SVG namespace prefix bypass in SanitizeSVG ( getDynamicIcon, unauthenticated )

SiYuan is a personal knowledge management system. From version 3.6.0 to before version 3.6.2, the SanitizeSVG function introduced in version 3.6.0 to fix XSS in the unauthenticated /api/icon/getDynamicIcon endpoint can be bypassed by using namespace-prefixed element names such as . The Go HTML5...

CVE-2026-34605

SiYuan is a personal knowledge management system. From version 3.6.0 to before version 3.6.2, the SanitizeSVG function introduced in version 3.6.0 to fix XSS in the unauthenticated /api/icon/getDynamicIcon endpoint can be bypassed by using namespace-prefixed element names such as . The Go HTML5...

CVE-2026-34605 SiYuan: Reflected XSS via SVG namespace prefix bypass in SanitizeSVG ( getDynamicIcon, unauthenticated )

SiYuan is a personal knowledge management system. From version 3.6.0 to before version 3.6.2, the SanitizeSVG function introduced in version 3.6.0 to fix XSS in the unauthenticated /api/icon/getDynamicIcon endpoint can be bypassed by using namespace-prefixed element names such as . The Go HTML5...

SiYuan 跨站脚本漏洞

SiYuan is a privacy-oriented personal knowledge management system developed by SiYuan itself. Versions of SiYuan from 3.6.0 to 3.6.2 had a cross-site scripting vulnerability. This vulnerability stemmed from the SanitizeSVG function being bypassed, allowing cross-site scripting attacks to occur...

CVE-2026-34605: Improper Neutralization of Input During Web Page Generation

SiYuan is a personal knowledge management system. From version 3.6.0 to before version 3.6.2, the SanitizeSVG function introduced in version 3.6.0 to fix XSS in the unauthenticated /api/icon/getDynamicIcon endpoint can be bypassed by using namespace-prefixed element names such as . The Go HTML5...

CVE-2026-32940

SiYuan is a personal knowledge management system. In versions 3.6.0 and below, SanitizeSVG has an incomplete blocklist — it blocks data:text/html and data:image/svg+xml in href attributes but misses data:text/xml and data:application/xml, both of which can render SVG with JavaScript execution. Th...

Cross-site Scripting (XSS)

Overview Affected versions of this package are vulnerable to Cross-site Scripting XSS through the SanitizeSVG function in kernel/util/misc.go. An attacker can execute JavaScript in a user’s browser by supplying a crafted data: URI in an SVG payload. Details Cross-site scripting or XSS is a code...

CVE-2026-32940

SiYuan Note's CVE-2026-32940 affects versions 3.6.0 and below where SanitizeSVG's blocklist is incomplete, allowing a click-through XSS via the unauthenticated /api/icon/getDynamicIcon endpoint. The endpoint echoes user-controlled input (content) directly into SVG markup using fmt.Sprintf with no...

CVE-2026-32940 SiYuan has a SanitizeSVG bypass via data:text/xml in getDynamicIcon (incomplete fix for CVE-2026-29183)

SiYuan is a personal knowledge management system. In versions 3.6.0 and below, SanitizeSVG has an incomplete blocklist — it blocks data:text/html and data:image/svg+xml in href attributes but misses data:text/xml and data:application/xml, both of which can render SVG with JavaScript execution. Th...

CVE-2026-32940: Improper Neutralization of Input During Web Page Generation

SiYuan is a personal knowledge management system. In versions 3.6.0 and below, SanitizeSVG has an incomplete blocklist — it blocks data:text/html and data:image/svg+xml in href attributes but misses data:text/xml and data:application/xml, both of which can render SVG with JavaScript execution. Th...

SiYuan has a SanitizeSVG bypass via data:text/xml in getDynamicIcon (incomplete fix for CVE-2026-29183)

SanitizeSVG bypass via data:text/xml in getDynamicIcon incomplete fix for CVE-2026-29183 SanitizeSVG blocks data:text/html and data:image/svg+xml in href attributes but misses data:text/xml and data:application/xml. Both render SVG with onload JavaScript execution confirmed in Chromium 136, other...

GHSA-4MX9-3C2H-HWHG SiYuan has a SanitizeSVG bypass via data:text/xml in getDynamicIcon (incomplete fix for CVE-2026-29183)

SanitizeSVG bypass via data:text/xml in getDynamicIcon incomplete fix for CVE-2026-29183 SanitizeSVG blocks data:text/html and data:image/svg+xml in href attributes but misses data:text/xml and data:application/xml. Both render SVG with onload JavaScript execution confirmed in Chromium 136, other...

Cross-site Scripting (XSS)

Overview Affected versions of this package are vulnerable to Cross-site Scripting XSS in the SanitizeSVG component. An attacker can execute arbitrary JavaScript in the context of the application by injecting specially crafted SVG content containing whitespace-obfuscated javascript: URIs into the...

Cross-site Scripting (XSS)

Overview Affected versions of this package are vulnerable to Cross-site Scripting XSS via the SanitizeSVG component. An attacker can execute arbitrary JavaScript in the context of the application by injecting crafted SVG content containing or elements that dynamically assign dangerous attributes ...

CVE-2026-31807: Improper Neutralization of Input During Web Page Generation

SiYuan is a personal knowledge management system. Prior to 3.5.10, SiYuan's SVG sanitizer SanitizeSVG blocks dangerous elements...

CVE-2026-31809: Improper Neutralization of Input During Web Page Generation

SiYuan is a personal knowledge management system. Prior to 3.5.10, SiYuan's SVG sanitizer SanitizeSVG checks href attributes for the javascript: prefix using strings.HasPrefix. However, inserting ASCII tab , newline , or carriage return characters inside the javascript: string bypasses this prefi...