SpecifyJS is a declarative TypeScript user interface framework.

Code

The project this record applies to. Exploit listings stay in References.

• Repository · github.com

Timeline

Detection, updates, and resolution for this record.

1. Aug 21, 2026 · NIST NVD

   Detected

   SpecifyJS is a declarative TypeScript user interface framework. Prior to version 0.2.136, CSS value sanitization stripped and using simple regex, but could be bypassed with CSS unicode escapes ( ), null bytes, or CSS comments ( ). These CSS injection vectors only work in legacy browsers (IE6-IE10). SpecifyJS targets modern browsers. Starting in version 0.2.136, CSS sanitization now normalizes unic

2. Oct 14, 2026 · NIST NVD

   Updated

   SpecifyJS is a declarative TypeScript user interface framework. Prior to version 0.2.136, CSS value sanitization stripped and using simple regex, but could be bypassed with CSS unicode escapes ( ), null bytes, or CSS comments ( ). These CSS injection vectors only work in legacy browsers (IE6-IE10). SpecifyJS targets modern browsers. Starting in version 0.2.136, CSS sanitization now normalizes unic

Sources

• CVE.orgVulnerability recordCVE-2026-50290

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2026-50290

  30-day exploitation probability 0.5%

  first.org
• NIST NVDVulnerability recordCVE-2026-50290

  SpecifyJS is a declarative TypeScript user interface framework. Prior to version 0.2.136, CSS value sanitization stripped and using simple regex, but could be bypassed with CSS unicode escapes ( ), null bytes, or CSS comments (`exp/**

  nvd.nist.gov

References

• Reference · github.com
• Reference · github.com