What’s Vulnerable › Vulnerabilities

CVE-2021-36793

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% 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-200

Description

The routes (aka Extbase Yaml Routes) extension before 2.1.1 for TYPO3, when CsrfTokenViewHelper is used, allows Sensitive Information Disclosure because a session identifier is unsafely present in HTML output.

Affected products

• Routes Project Routes: before 2.1.1 — fixed in 2.1.1

How to fix

Upgrade to a fixed version: Routes Project Routes 2.1.1. Check the vendor advisory for mitigations.

References

• https://typo3.org/help/security-advisories/security
• https://typo3.org/security/advisory/typo3-ext-sa-2021-008
• https://typo3.org/help/security-advisories/security
• https://typo3.org/security/advisory/typo3-ext-sa-2021-008

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