Summary iPlain-English security verdict for Shiro, generated from its current health score, actively-exploited vulnerabilities, and latest supported version.
Shiro currently scores 0/100 — critical, with active exploitation. 1 of its known vulnerability is being actively exploited in the wild (CISA KEV), including CVE-2016-4437. Upgrade immediately and review your exposure to the actively-exploited CVEs below.
Disclosure trend iNew CVEs published for Shiro 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-2016-4437 CRITICAL exploited CWE-321 EPSS 93% → fixed in 1.2.5 CVE-2020-17523 CRITICAL Improper authentication EPSS 86% → fixed in 1.7.1 CVE-2021-41303 CRITICAL Improper authentication EPSS 76% → fixed in 1.8.0 CVE-2010-3863 MEDIUM Path traversal EPSS 55% → see advisory CVE-2020-13933 HIGH EPSS 48% → fixed in 1.6.0 CVE-2020-1957 CRITICAL EPSS 26% → fixed in 1.5.2 CVE-2020-11989 CRITICAL EPSS 24% → fixed in 1.5.3 CVE-2022-32532 CRITICAL Incorrect authorization EPSS 20% → fixed in 1.9.1 CVE-2020-17510 CRITICAL Improper authentication EPSS 9% → fixed in 1.7.0 CVE-2022-40664 CRITICAL Improper authentication EPSS 2% → fixed in 1.10.0 CVE-2023-34478 CRITICAL Path traversal EPSS 2% → fixed in 1.12.0Get alerted about Shiro
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Frequently asked
Is Shiro safe and patched?
Shiro currently scores 0/100 — critical, with active exploitation. 1 of its known vulnerability is being actively exploited in the wild (CISA KEV), including CVE-2016-4437. Upgrade immediately and review your exposure to the actively-exploited CVEs below.
What should I do about Shiro now?
Review the patch-priority list, apply the available fixes (or move to the latest release), and confirm against Apache's official advisory. Some issues are under active exploitation, so treat this as urgent.
Why is Shiro listed on IsItPatched?
Shiro was added automatically because CISA's Known Exploited Vulnerabilities (KEV) catalog flagged it as actively exploited in the wild. IsItPatched tracks its known CVEs, severity (CVSS), exploitation probability (EPSS) and KEV status from public data; its version and lifecycle mapping is verified over time.
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 Apache's official advisory before you patch or upgrade.