Answer in brief
CVE-2026-73648 records a Medium severity vulnerability in rails-html-sanitizer: Possible XSS vulnerability with certain configurations. The current sources do not mark it as known exploited. The current feed maps rails/rails-html-sanitizer (generic), rails-html-sanitizer (rubygems), rails-html-sanitizer (rubygems). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2026-73648 records a Medium severity vulnerability in rails-html-sanitizer: Possible XSS vulnerability with certain configurations. The current sources do not mark it as known exploited. The current feed maps rails/rails-html-sanitizer (generic), rails-html-sanitizer (rubygems), rails-html-sanitizer (rubygems). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps rails/rails-html-sanitizer (generic), rails-html-sanitizer (rubygems), rails-html-sanitizer (rubygems). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| rails/rails-html-sanitizergeneric | >= 1.0.3, < 1.7.1 | Not reported |
| rails-html-sanitizerrubygems | >=1.0.3 <1.7.1 | 1.7.1 |
| rails-html-sanitizerrubygems | >=1.0.3,<1.7.1 | 1.7.1 |
Published upstream
Aug 13, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 13, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 8, 2026
rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. From 1.0.3 until 1.7.1, Rails::HTML::PermitScrubber restricted SVG reference elements in SVG_ALLOW_LOCAL_HREF only when they used xlink:href, even though browsers also accept the plain href attribute. Applications with non-default allowed tags that included SVG use or feImage elements could therefore permit external references; a same-origin external SVG referenced by use could execute scripts in the sanitized document's context, while feImage could load external images for tracking. Applications using the default allowed tags are not affected. This issue is fixed in version 1.7.1.
Quoted source text, attributed separately from HOL analysis.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps rails/rails-html-sanitizer (generic), rails-html-sanitizer (rubygems), rails-html-sanitizer (rubygems). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| rails/rails-html-sanitizergeneric | >= 1.0.3, < 1.7.1 | Not reported |
| rails-html-sanitizerrubygems | >=1.0.3 <1.7.1 | 1.7.1 |
| rails-html-sanitizerrubygems | >=1.0.3,<1.7.1 | 1.7.1 |
Published upstream
Aug 13, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 13, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 8, 2026
rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. From 1.0.3 until 1.7.1, Rails::HTML::PermitScrubber restricted SVG reference elements in SVG_ALLOW_LOCAL_HREF only when they used xlink:href, even though browsers also accept the plain href attribute. Applications with non-default allowed tags that included SVG use or feImage elements could therefore permit external references; a same-origin external SVG referenced by use could execute scripts in the sanitized document's context, while feImage could load external images for tracking. Applications using the default allowed tags are not affected. This issue is fixed in version 1.7.1.
Quoted source text, attributed separately from HOL analysis.