p PatchFirst

CVE-2026-116582

CVE-2026-116582 · Seroval: Script injection through RegExp sources in serialized output

This page contains facts from public vulnerability sources. Check the original advisory before updating.

Seroval facilitates JavaScript value stringification, including complex structures beyond JSON.stringify capabilities. Prior to 1.0.0 and from 1.5.5 until 1.6.10, the JavaScript-output APIs serialize a RegExp source containing a less-than character without the escaping needed for an HTML script element. An application is affected when it builds regular expression syntax from untrusted input, serializes that RegExp through serialize, serializeAsync, crossSerialize, crossSerializeAsync, crossSerializeStream, Serializer, or compileJSON, and embeds the result in an HTML script element. The crafted source can terminate the element and execute script in the page received by another user. This issue is fixed in version 1.6.10.

CVSS 4.7 · Medium · EPSS 0.2% · Fix available

Published
Updated

Stack: node

Affected products and versions

  • seroval

    Versions
    • < 1.0.0: Affected
    • >= 1.5.5, < 1.6.10: Affected

    No fix published

  • seroval npm

    Affected ranges
    • SEMVER: ≥ 1.5.5, < 1.6.10

    Update to 1.6.10

  • seroval npm

    Affected ranges
    • SEMVER: < 1.0.0

    Update to 1.0.0

Original sources

Check your server →