CVE-2026-115897
Description
Serialize JavaScript serializes JavaScript values to a superset of JSON that includes regular expressions and functions. Prior to 7.1.3, the function-source escaping logic does not neutralize a bare closing-script prefix when attacker-influenced function source text ends exactly at that prefix. Because each function body is escaped independently, a delimiter supplied by surrounding serialized output can terminate an HTML script element, and a later serialized value supplies injected markup that becomes a live element in the page. Exploitation requires control of a serialized function's source text, such as through a spoofed toString(). This issue is fixed in version 7.1.3.
How to fix
- serialize-javascript7.1.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| serialize-javascriptnpm | v < 7.1.3 | 7.1.3 |
| microsoft azl3_python-tensorboard_2.16.2-6 | No range specified | — |
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