Description
It is possible to bypass the Kerberos pre-authentication check in Apache Kerby by sending a PA-DATA with an unrecognized or unsupported type. Users are recommended to upgrade to version 2.1.2, which fixes this issue.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Apache Software Foundation | Apache Kerby | < 2.1.2 | 2.1.2 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | druid | 38.0.0-r8 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Maven | org.apache.kerby:kerb-server | < 2.1.2 | 2.1.2 | GHSA-262p-fj3f-xh7v |
Advisories 1
- WID-SEC-2026-2801 IBM InfoSphere Information Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 12, 2026
References
- https://lists.apache.org/thread/1y3glgh3kzwoxo5m2lq504cjlh1dsrfh vendor-advisory