Hacking, PenTest, and Cybersecurity Tools for Your Security Arsenal!

Loading CVE intelligence

Loading vulnerability catalog

Kitploit is a directory of hacking, cybersecurity, and pentesting tools. Discover the latest project updates to find vulnerabilities, analyze systems, automate testing, and strengthen your security.

Tool Directory

CVE-2018-19131

MediumPublished

Squid before 4.4 has XSS via a crafted X.509 certificate during HTTP(S) error page generation for certificate errors.

Published: Nov 9, 2018
Updated: Sep 16, 2024
Assigning CNA: mitre
Evidence observed: Aug 5, 2026

Primary CVSS

6.1/ 10Medium

nvd · CVSS 3.0

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS probability estimate

4.1%

Low · next 30 days

Percentile: 90.3%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

Squid before 4.4 has XSS via a crafted X.509 certificate during HTTP(S) error page generation for certificate errors.

Sources

CVE-2018-19131PoC
Proof-of-Concept exploit of CVE-2018-19131: Squid Proxy XSS via X.509 Certificate

Responsible use

Use vulnerability information only on systems you own or are authorized to test. Kitploit links to public research metadata and does not store exploit code or malicious payloads.