vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2026-57915

Apache Kerby: Kerberos Pre-Authentication Bypass

HIGH
7.3
CVSS Score
Published: June 26, 2026 at 12:09 PM UTC
Updated: October 25, 2026 at 10:10 PM UTC
3 products affected across 2 vendorsKerbyStreams for Apache KafkaJBoss Amq Clients

Using Apache Kerby by Apache Software Foundation?

Get instant alerts when new vulnerabilities affect Apache Kerby - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
HIGH7.3
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Kerby· Apachemaven
90%
v < 2.1.2
Affected range stops below 2.1.2, so it looks safe — our inference, not a vendor statement
JBoss Amq Clients· Red Hatrpm
60%
All versions
Streams for Apache Kafka· Red Hatrpm
60%
2
Vendor states this is fixed in 3 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (5)

Vendor Advisory
Source: cverecord
https://lists.apache.org/thread/1y3glgh3kzwoxo5m2lq504cjlh1dsrfh
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.openwall.com/lists/oss-security/2026/06/26/8
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://access.redhat.com/security/cve/CVE-2026-57915
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://bugzilla.redhat.com/show_bug.cgi?id=2493407
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-57915.json

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.3HIGHCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
LOW
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-304CWE-358

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card