Shiro vulnerabilities: known CVEs & security history
Apache · Actively exploited · 5 tracked CVEs · 0 actively exploited · updated August 2026 · what is a CVE? →
This is the full list of known vulnerabilities (CVEs) across all Shiro release lines — 5 in total. A CVE here doesn't mean your version is affected — check Shiro's current status and the safe version to run.
Known Shiro CVEs
Actively-exploited and most-severe first. Open any CVE for full details.
| CVE | Severity | CVSS | EPSS | Year |
|---|---|---|---|---|
| CVE-2026-49268 | critical | 9.1 | 1% | 2026 |
| CVE-2026-43828 | medium | 6.5 | 0% | 2026 |
| CVE-2026-43827 | medium | 6.5 | 0% | 2026 |
| CVE-2026-48589 | medium | 5.4 | 0% | 2026 |
| CVE-2026-44598 | medium | 5.4 | 0% | 2026 |
Is my Shiro version affected?
The list above spans every release. To know whether your version is affected — and the minimum safe version to upgrade to — check it directly.
Check your Shiro version → · Monitor Shiro for new CVEs →
Shiro vulnerabilities — frequently asked
How many known vulnerabilities does Shiro have?
IsItPatched tracks 5 CVEs for Shiro. 1 is critical-severity and 0 high-severity. These span every release line — what matters is whether the version you run is affected.
Does Shiro have any actively-exploited vulnerabilities?
None of Shiro's tracked CVEs are currently in CISA's KEV catalog — but new ones can be added at any time, so keep your version current.
What is the most severe Shiro vulnerability?
Among tracked issues, CVE-2026-49268 (CRITICAL, CVSS 9.1) ranks highest — a CWE-90 weakness.
Is Shiro safe to use?
It depends on the version. The latest supported Shiro release clears the known issues; older versions may still be affected. Check the exact version you run for a verdict.
CVE data aggregated from NVD, CISA KEV and EPSS (FIRST.org). Related: Shiro security status · Shiro end-of-life · actively-exploited CVEs. Always verify against Apache's advisories — see our disclaimer.