The jh_captcha extension through 2.1.3, and 3.x through 3.0.2, for TYPO3 allows XSS.
https://typo3.org/security/advisory/typo3-ext-sa-2020-012
https://typo3.org/help/security-advisories
Source: Mitre, NVD
Published: 2020-07-07
Updated: 2026-06-17
Base Score: 3.5
Vector: CVSS2#AV:N/AC:M/Au:S/C:N/I:P/A:N
Severity: Low
Base Score: 5.4
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Severity: Medium
EPSS: 0.00206