What is CVE-2026-34206?

CVE-2026-34206 is a medium-severity vulnerability in Libops Captcha-protect, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-03-31.

How severe is CVE-2026-34206?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Libops Captcha-protect

CVE-2026-34206

Captcha Protect is a Traefik middleware to add an anti-bot challenge to individual IPs in a subnet when traffic spikes are detected from that subnet. Prior to version 1.12.2, a reflected cross-site scripting (XSS) vulnerability exists in g…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (12.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Libops Captcha-protect — versions < 1.12.2

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

https://github.com/libops/captcha-protect/security/advisories/GHSA-ph62-4j5g-2q4r (x_refsource_CONFIRM)
https://github.com/libops/captcha-protect/commit/eef6211ecd1147273be484d913b81c68c0bd8d3f (x_refsource_MISC)
https://github.com/libops/captcha-protect/releases/tag/v1.12.2 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-34206?: CVE-2026-34206 is a medium-severity vulnerability in Libops Captcha-protect, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-03-31.
How severe is CVE-2026-34206?: Medium severity. CVSS v3 base score is 6.1 out of 10.