What’s Vulnerable › Vulnerabilities

CVE-2021-36788

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-08-13 · updated 2026-06-17
• Weakness: CWE-79

Description

The yoast_seo (aka Yoast SEO) extension before 7.2.3 for TYPO3 allows XSS.

Affected products

• Yoast SEO: Local: before 7.2.3 — fixed in 7.2.3

How to fix

Upgrade to a fixed version: Yoast SEO: Local 7.2.3. Check the vendor advisory for mitigations.

References

• https://typo3.org/help/security-advisories/security
• https://typo3.org/security/advisory/typo3-ext-sa-2021-013
• https://typo3.org/help/security-advisories/security
• https://typo3.org/security/advisory/typo3-ext-sa-2021-013

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