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High severity8.8NVD Advisory· Published May 24, 2021· Updated Jun 17, 2026

CVE-2021-24307

CVE-2021-24307

Description

The All in One SEO – Best WordPress SEO Plugin – Easily Improve Your SEO Rankings before 4.1.0.2 enables authenticated users with "aioseo_tools_settings" privilege (most of the time admin) to execute arbitrary code on the underlying host. Users can restore plugin's configuration by uploading a backup .ini file in the section "Tool > Import/Export". However, the plugin attempts to unserialize values of the .ini file. Moreover, the plugin embeds Monolog library which can be used to craft a gadget chain and thus trigger system command execution.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

3
  • Aioseo/All In One Seo
    cpe:2.3:a:aioseo:all_in_one_seo:*:*:*:*:*:wordpress:*:*
    Range: <4.1.0.2
  • WordPress/All In One Seollm-fuzzy
    Range: <4.1.0.2
  • All in One SEO Team/All in One SEO – Best WordPress SEO Plugin – Easily Improve Your SEO Rankingsv5
    Range: 4.1.0.2

Patches

Vulnerability mechanics

References

2

News mentions

0

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