TI-2026-64265 Aliases CVE-2026-97711 GHSA-gfhx-hw2g-v5hg

Serialize JavaScript: Cross-site scripting (XSS) via unescaped </script> in serialized function bodies

LOW 12CWE-79Published 2026-09-29 · Updated 2026-09-29

Key facts

Attack vector: Network
Privileges required: None
User interaction: Passive
Attack complexity: Low
Attack requirements: Present
Impact type: Cross-site scripting
Confidentiality · integrity · availability: None · None · None
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00318 24th percentileScored 2026-11-07

Fix Fixed serialize-javascript (yahoo): 7.1.2serialize-javascript (npm): 7.1.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
yahoo	serialize-javascript	7.1.1 to before 7.1.2	7.1.2	Patch available	CNA
—	serialize-javascript (npm)	7.1.1 to before 7.1.2	7.1.2	Patch available	GHSA-gfhx-hw2g-v5hg

serialize-javascript Vendoryahoo Affected 7.1.1 to before 7.1.2 Fixed in 7.1.2 Patch available CNA
serialize-javascript (npm) Vendor— Affected 7.1.1 to before 7.1.2 Fixed in 7.1.2 Patch available GHSA-gfhx-hw2g-v5hg

Remediation

Fix · CNA serialize-javascript (yahoo) Fixed in 7.1.2
Fix · GHSA-gfhx-hw2g-v5hg serialize-javascript (npm) Fixed in 7.1.2 Advisory →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Not affected: 1 product

Red Hat Hardened Images

Timeline

2026-10-02 Threatist record created from CVE-2026-97711
2026-10-03 Alias added: GHSA-gfhx-hw2g-v5hg

References

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-97711

Other 4

TI-2007-03044 Buffer overflow in the Yahoo! Webcam Upload ActiveX control in ywcupl.dll 2.0.1.4 for… CVSS 2.0HIGH 9.3
TI-2026-62497 CMAK through 3.0.0.6 Cross-Site Request Forgery via Missing CSRF Filter CVSS 4.0HIGH 7.2
TI-2007-04373 Buffer overflow in a certain ActiveX control in YVerInfo.dll before 2007.8.27.1 in the… CVSS 2.0HIGH 9.3
TI-2026-41720 Elide 7.1.17 - Permission Bypass in Sort Expression Validation CVSS 4.0MEDIUM 5.3
TI-2007-03904 Stack-based buffer overflow in the YDPCTL.YDPControl.1 (aka Yahoo! Installer Plugin for… CVSS 2.0HIGH 9.3
TI-2007-03045 Buffer overflow in the Yahoo! Webcam Viewer ActiveX control in ywcvwr.dll 2.0.1.4 for… CVSS 2.0HIGH 9.3

See all 75 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences