# CVE-2026-115754: serialize-javascript 7.0.1 before 7.1.3 XSS via unescaped </script in function body

CVE-2026-115754 is fixed in node-serialize-javascript on 1 platform by DEBIAN-CVE-2026-115754 (version 7.1.4+~5.0.4-1), released October 27, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-115754
- Priority: Routine
- CVSS: 4.7 (Low)
- EPSS: 0.0023
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 23, 2026
- Weakness: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-115754

## Description

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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | node-serialize-javascript Debian 14 | 7.1.4+~5.0.4-1 | [DEBIAN-CVE-2026-115754](https://patchblox.com/security/data/fix/linux/debian-cve-2026-115754.md) | Oct 27, 2026 |

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Data as of 2026-11-08T19:12:23Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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