SiYuan <= v3.5.9 - Cross Site Scripting

SiYuan v3.5.10 contains a reflected XSS caused by improper sanitization of javascript: href attributes allowing ASCII control characters to bypass prefix checks in SVG sanitizer, letting unauthenticated attackers execute JavaScript via /api/icon/getDynamicIcon. id: CVE-2026-31809 info: name: SiYu...

CVE-2026-107381

svg-sanitizer is a PHP SVG/XML sanitizer. Prior to 1.0.0, Resolver::processReferences in src/ElementReference/Resolver.php builds the SVG reference graph with a case-sensitive href attribute predicate before cleanHrefAttributes normalizes mixed-case names. An attacker can provide xlink:HrEf on...

CVE-2026-107381 svg-sanitizer: Mixed-case xlink:HrEf skips the `<use>` nesting-DoS check in Resolver::processReferences

svg-sanitizer is a PHP SVG/XML sanitizer. Prior to 1.0.0, Resolver::processReferences in src/ElementReference/Resolver.php builds the SVG reference graph with a case-sensitive href attribute predicate before cleanHrefAttributes normalizes mixed-case names. An attacker can provide xlink:HrEf on...

CVE-2026-107381

The svg-sanitizer PHP library is vulnerable to a Denial of Service (DoS) attack due to a case-sensitivity mismatch in how it processes SVG elements. Prior to version 1.0.0 , the Resolver::processReferences() function uses a case-sensitive XPath predicate to build the reference graph. An attacker...

CVE-2026-107381 svg-sanitizer: Mixed-case xlink:HrEf skips the `<use>` nesting-DoS check in Resolver::processReferences

svg-sanitizer is a PHP SVG/XML sanitizer. Prior to 1.0.0, Resolver::processReferences in src/ElementReference/Resolver.php builds the SVG reference graph with a case-sensitive href attribute predicate before cleanHrefAttributes normalizes mixed-case names. An attacker can provide xlink:HrEf on...

CVE-2026-107381: Improper Handling of Case Sensitivity

svg-sanitizer is a PHP SVG/XML sanitizer. Prior to 1.0.0, Resolver::processReferences in src/ElementReference/Resolver.php builds the SVG reference graph with a case-sensitive href attribute predicate before cleanHrefAttributes normalizes mixed-case names. An attacker can provide xlink:HrEf on...

svg-sanitizer: Mixed-case xlink:HrEf skips the `<use>` nesting-DoS check in Resolver::processReferences

Summary Resolver::processReferences collects elements with the XPath predicate use@href or @xlink:href, which is case sensitive. A element written as xlink:HrEf is therefore never added to the reference graph, so the nesting-DoS nullification never marks it for removal...

GHSA-M9XH-6747-9R6F svg-sanitizer: Mixed-case xlink:HrEf skips the `<use>` nesting-DoS check in Resolver::processReferences

Summary Resolver::processReferences collects elements with the XPath predicate use@href or @xlink:href, which is case sensitive. A element written as xlink:HrEf is therefore never added to the reference graph, so the nesting-DoS nullification never marks it for removal...

CVE-2026-107380

savg-sanitizer is a PHP SVG/XML sanitizer. Prior to 1.0.0, svg-sanitizer's isHrefSafeValue validates an SVG href after XML DTD entity expansion, but saveXML serializes the original entity reference after removing the DTD declaration. A crafted entity such as Tab can appear to the sanitizer as a...

CVE-2026-107379

savg-sanitizer is a PHP SVG/XML sanitizer. Prior to 1.0.0, svg-sanitizer allows a crafted SVG DTD with a FIXED attribute default to make cleanAttributesOnWhitelist perform a double DOMElement::removeAttribute call on the same attribute name in src/Sanitizer.php. The first removal deletes the...

EUVD-2026-95137

savg-sanitizer is a PHP SVG/XML sanitizer. Prior to 1.0.0, svg-sanitizer's isHrefSafeValue validates an SVG href after XML DTD entity expansion, but saveXML serializes the original entity reference after removing the DTD declaration. A crafted entity such as Tab can appear to the sanitizer as a...

CVE-2026-107380 enshrined/svg-sanitize: Stored XSS via DTD Entity / HTML5 Named Character Reference Collision

savg-sanitizer is a PHP SVG/XML sanitizer. Prior to 1.0.0, svg-sanitizer's isHrefSafeValue validates an SVG href after XML DTD entity expansion, but saveXML serializes the original entity reference after removing the DTD declaration. A crafted entity such as Tab can appear to the sanitizer as a...

CVE-2026-107380

The savg-sanitizer PHP SVG/XML sanitizer is vulnerable to Stored XSS in versions prior to 1.0.0 . The issue stems from a discrepancy between isHrefSafeValue(), which validates href attributes after XML DTD entity expansion, and saveXML(), which serializes the original entity reference after remov...

CVE-2026-107379 enshrined/svg-sanitize: Denial of Service via DTD Attribute Declaration Crash

savg-sanitizer is a PHP SVG/XML sanitizer. Prior to 1.0.0, svg-sanitizer allows a crafted SVG DTD with a FIXED attribute default to make cleanAttributesOnWhitelist perform a double DOMElement::removeAttribute call on the same attribute name in src/Sanitizer.php. The first removal deletes the...

EUVD-2026-95136

savg-sanitizer is a PHP SVG/XML sanitizer. Prior to 1.0.0, svg-sanitizer allows a crafted SVG DTD with a FIXED attribute default to make cleanAttributesOnWhitelist perform a double DOMElement::removeAttribute call on the same attribute name in src/Sanitizer.php. The first removal deletes the...

CVE-2026-107379

The PHP SVG/XML sanitizer svg-sanitizer is vulnerable in versions prior to 1.0.0 due to a flaw in the src/Sanitizer.php file. Specifically, a crafted SVG DTD with a #FIXED attribute default can cause the cleanAttributesOnWhitelist() function to perform a double DOMElement::removeAttribute() call ...

CVE-2026-107379: Allocation of Resources Without Limits or Throttling

savg-sanitizer is a PHP SVG/XML sanitizer. Prior to 1.0.0, svg-sanitizer allows a crafted SVG DTD with a FIXED attribute default to make cleanAttributesOnWhitelist perform a double DOMElement::removeAttribute call on the same attribute name in src/Sanitizer.php. The first removal deletes the...

CVE-2026-107380: Improper Neutralization of Input During Web Page Generation

savg-sanitizer is a PHP SVG/XML sanitizer. Prior to 1.0.0, svg-sanitizer's isHrefSafeValue validates an SVG href after XML DTD entity expansion, but saveXML serializes the original entity reference after removing the DTD declaration. A crafted entity such as Tab can appear to the sanitizer as a...

GO-2026-6364 SiYuan: Stored and reflected XSS in SiYuan through an SVG sanitizer bypass in github.com/siyuan-note/siyuan/kernel

SiYuan: Stored and reflected XSS in SiYuan through an SVG sanitizer bypass in github.com/siyuan-note/siyuan/kernel...

SiYuan: Stored and reflected XSS in SiYuan through an SVG sanitizer bypass

Summary SiYuan cleans user supplied SVG with util.SanitizeSVG before it serves the file inline as image/svg+xml. This cleaner is the guard behind the Editor.AllowSVGScript setting, which is off by default, so a inside an SVG is meant to be removed. The cleaner reads the input as HTML, but the...