CVE-2026-78243: CWE-248 Uncaught exception in Apache Software Foundation Apache YuniKorn
Description
Apache YuniKorn 1.8.0 and later, if configured with the LDAP group resolver, crashes due to an out of bounds read processing group membership entries.If the LDAP server returns a group membership entry, memberOf attribute, for a user specified in the pod the server crashes if a membership record does not start with "CN=". This only affects install that have the non default LDAP group provider configured. Users are recommended to upgrade to version 1.10.0, which fixes this issue.
CVSS v4.0
Score 2.1low
Affected software
Apache Software Foundation
Apache YuniKorn
pkg:github/github.com/apache/yunikorn-k8shimRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-78243 is a low severity vulnerability in Apache YuniKorn (versions >=1.8.0 <1.10.0) related to an uncaught exception caused by an out-of-bounds read when processing LDAP group membership entries. If the LDAP server returns a memberOf attribute for a user and the membership record does not begin with "CN=", the server crashes. This affects only configurations using the LDAP group resolver. The issue is addressed by upgrading to Apache YuniKorn version 1.10.0.
Potential Impact
The vulnerability causes the Apache YuniKorn server to crash when processing certain malformed LDAP group membership entries. This results in a denial of service condition for affected installations configured with the LDAP group resolver. There is no indication of data compromise or remote code execution. The impact is limited to availability disruption.
Mitigation Recommendations
Users should upgrade Apache YuniKorn to version 1.10.0 or later, where this issue is fixed. No other mitigation or workaround is indicated. The vulnerability only affects installations configured with the LDAP group resolver, so disabling or not using this configuration avoids exposure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-08-24T05:15:32.611Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ac612062cdf04f65633b1ee
Added to database: 10/07/2026, 09:33:58 UTC
Last enriched: 10/07/2026, 09:48:28 UTC
Last updated: 10/07/2026, 18:56:10 UTC
Views: 18
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