CVE-2021-34657: TypoFR <= 0.11 Reflected Cross-Site Scripting

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-08-16 · updated 2026-06-17
Weakness: CWE-79

Description

The 2TypoFR WordPress plugin is vulnerable to Reflected Cross-Site Scripting via the text function found in the ~/vendor/Org_Heigl/Hyphenator/index.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 0.11.

Affected products

TypoFR: through 0.11

References

https://plugins.trac.wordpress.org/browser/typofr/trunk/vendor/Org_Heigl/Hyphenator/index.php#L82
https://www.wordfence.com/vulnerability-advisories/#CVE-2021-34657
https://plugins.trac.wordpress.org/browser/typofr/trunk/vendor/Org_Heigl/Hyphenator/index.php#L82
https://www.wordfence.com/vulnerability-advisories/#CVE-2021-34657

Get alerted when CVE-2021-34657 or the next vulnerability affects your stack