CVE WatchSep 29, 2026

CVE-2026-97711

Serialize JavaScript serializes JavaScript values to a superset of JSON that includes regular expressions and functions. From 7.1.1 until 7.

CVSS

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No CVSS

EPSS

0.3%

p21

KEV

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Exploit Today

0-100

Published: Sep 29, 2026 · Last modified: Sep 29, 2026 · CWE-79

EPSS · 30d

0.3%EPSS · 30 days0.3%

2026-09-302026-10-19

Technical description

Serialize JavaScript serializes JavaScript values to a superset of JSON that includes regular expressions and functions. From 7.1.1 until 7.1.2, function values serialized by serialize-javascript are not fully protected against script-closing tags in attacker-influenced function source because SCRIPT_CLOSE_REGEXP can consume a second closing tag inside one match. When the serialized function is embedded in a script element, the surviving closing tag terminates the element early and causes the remaining output to be parsed as HTML, enabling cross-site scripting in the page origin. Only function values are affected; ordinary data values and options.isJSON output are unaffected. This issue is fixed in version 7.1.2.

Official references

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