Memory Leak Vulnerability in Cockpit Web Service by Red Hat
CVE-2026-76235

7.5HIGH

Key Information:

Vendor

Red Hat
Status
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 9
Vendor
CVE Published:
19 August 2026

What is CVE-2026-76235?

A memory leak vulnerability has been identified in Cockpit Web Service, where the login page handler inadvertently leaks heap allocations for each unauthenticated request that carries a CockpitLang cookie. This behavior can be exploited by a remote attacker, potentially leading to memory exhaustion on the host system. Such an exploit may result in a denial of service, impacting the availability of the service and degrading system performance. Users are advised to apply the latest updates to mitigate this issue.

References

https://access.redhat.com/security/cve/CVE-2026-76235
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2519497
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Arpit Jain for reporting this issue.
.