Summary iPlain-English security verdict for Squid, generated from its current health score, actively-exploited vulnerabilities, and latest supported version.
Squid currently scores 0/100 — critical. No tracked vulnerabilities are currently known to be exploited in the wild. Upgrade promptly to address the open critical vulnerabilities.
Disclosure trend iNew CVEs published for Squid each year (NVD). A higher bar means more disclosures that year — more scrutiny, not necessarily less safe.
Patch priority — what to act on iThe issues to fix first — actively exploited (CISA KEV) first, then by exploitation probability (EPSS), then severity. Each row's "→ fixed in" is the earliest version that patches it; "see advisory" means no fixed version is published.
Most urgent first — actively exploited, then likeliest to be exploited.
CVE-2021-31806 MEDIUM CWE-116 EPSS 96% → fixed in 5.0.6 CVE-2016-4054 HIGH Memory corruption EPSS 89% → see advisory CVE-2024-25617 MEDIUM CWE-182 EPSS 89% → fixed in 6.5 CVE-2023-49285 HIGH CWE-126 EPSS 89% → see advisory CVE-2023-46847 HIGH Buffer overflow EPSS 86% → fixed in 6.4 CVE-2013-4123 MEDIUM Improper input validation EPSS 80% → see advisory CVE-2016-4553 HIGH CWE-345 EPSS 80% → see advisory CVE-2021-33620 MEDIUM Improper input validation EPSS 80% → fixed in 5.0.6 CVE-2014-7141 MEDIUM CWE-19 EPSS 76% → see advisory CVE-2019-13345 MEDIUM Cross-site scripting (XSS) EPSS 74% → see advisory CVE-2021-28662 MEDIUM CWE-116 EPSS 72% → fixed in 5.0.6 CVE-2020-8450 HIGH CWE-131 EPSS 72% → fixed in 4.10Get alerted about Squid
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Frequently asked
Is Squid safe and patched?
Squid currently scores 0/100 — critical. No tracked vulnerabilities are currently known to be exploited in the wild. Upgrade promptly to address the open critical vulnerabilities.
What should I do about Squid now?
Review the patch-priority list, apply the available fixes (or move to the latest release), and confirm against Squid's official advisory.
lifecycle unknown — needs latest supported version
Informational only, from public data (NVD · CISA KEV · EPSS · endoflife.date), and can lag or miss vendor-specific fixes. Always confirm against Squid's official advisory before you patch or upgrade — Squid official site ↗