Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Apache Shiro (org.apache.shiro:shiro-core) versions before 1.13.0 and from 2.0.0-alpha1 before 2.0.0-alpha4 are affected. A path traversal flaw can lead to an authentication bypass when Shiro is used together with path rewriting, and the source gives few details on the exact conditions. Upgrade to 1.13.0 or 2.0.0-alpha4 or later; if upgrading is not possible, keep the blockSemicolon setting enabled, which is the default.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 6.5 | Medium | 3.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N | GitHub Advisory Database |
- CISA KEV Not listed.
- EPSS 0.012, the 68th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 15:10 UTC First seen by agentprime
- 31 Oct 2026, 15:10 UTC Confirmed by OSV