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TI-2026-79895 Aliases CVE-2026-115754GHSA-cvqw-cqhx-qmxc

Cross-site scripting in serialize-javascript via unescaped script tag

Priority LOW 12CWE-79Published · Updated

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 Red Hat. Impact type from CWE-79.

Summary

serialize-javascript from 7.0.1 before 7.1.3 contains a cross-site scripting flaw (CWE-79) in which serialized function source ending in an unescaped </script> lets attackers break out of HTML script elements. An attacker who controls a function's source through a spoofed toString() can inject live markup such as img onerror handlers. The CVSS 4.0 vector shows a network attacker who needs user interaction and gives low impact.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Description from the CNA

serialize-javascript from 7.0.1 before 7.1.3 contains a cross-site scripting vulnerability that allows attackers to break out of HTML script elements by ending serialized function source text with an unescaped </script. Attackers controlling a function's source via a spoofed toString() can combine surrounding output delimiters and later values to inject live markup such as img onerror handlers.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00231 14th percentileScored 2026-11-07
Fix Fixed serialize-javascript (yahoo): 7.1.3Red Hat: 1 advisory

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

VendorProductAffected versionsFixed inStatusSource
yahooserialize-javascript7.0.1 to before 7.1.37.1.3Patch availableCNA
  • serialize-javascript Vendoryahoo Affected 7.0.1 to before 7.1.3 Fixed in 7.1.3 Patch available CNA

Remediation

Upgrade serialize-javascript to version 7.1.3. Red Hat fixes this in Red Hat Hardened Images through RHSA-2026:93601, released 2026-11-02.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

  • Fix · CNA serialize-javascript (yahoo) Fixed in 7.1.3

Red Hat 1 advisory

  • RHSA-2026:93601 Released 2026-11-02 · Red Hat rating Important
    Red Hat Hardened Images RPMs Security Update
    • Red Hat Hardened Images grafana12.4-12.4.13-0.6.hum1@aarch64, grafana12.4-12.4.13-0.6.hum1@src, grafana12.4-12.4.13-0.6.hum1@x86_64

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Hardened ImagesFixed RHSA-2026:93601
Not affected: 1 product
  • Red Hat Hardened Images

Timeline

  1. 2026-10-23 Threatist record created from CVE-2026-115754
  2. 2026-10-23 CISA SSVC decision points changed
  3. 2026-10-23 Alias added: GHSA-cvqw-cqhx-qmxc
  4. 2026-10-24 Affected versions changed · Red Hat
  5. 2026-10-24 CVSS score added · Red Hat
  6. 2026-11-03 Fix available: RHSA-2026:93601 · Red Hat
  7. 2026-11-03 Fix available: Red Hat Hardened Images · Red Hat

References

Patch 2

Advisory 1

Other 1

  • 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