Red Hat OpenShift Container Platform 4.12: Server-Side Request Forgery
CVE-2026-75888 is a high-severity server-side request forgery vulnerability in Red Hat OpenShift Container Platform 4.12 from Red Hat, with a CVSS 3.1 base score of 7.7 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. There is no confirmed exploitation so far. EPSS estimates a 0.45% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of Red Hat OpenShift Container Platform 4.12 you run against the affected versions below, and install the vendor's latest release.
Affected products and versions
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- ChangedThe attack can reach beyond the vulnerable component into other systems.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- NoneNothing can be modified.
- Availability
- NoneAvailability is not affected.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N. Scored by CNA (redhat.com).
Official description
A flaw was found in the OpenShift console. An authenticated console user can exploit a Server-Side Request Forgery (SSRF) vulnerability by providing a specially crafted Helm chart URL without proper validation. This allows the user to make the console pod fetch arbitrary URLs, potentially leading to the disclosure of sensitive information through error messages or enabling blind port scanning within the cluster.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Server-Side Request Forgery
The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.
How developers prevent this class of flaw
- If there is a known list of applications, IP, hostname, and/or domains to which the product is allowed to communicate, then use allowlists to ensure that outgoing requests are restricted to these known entities. The allowlists could be in the application code or possibly enforced by firewalls or network segmentation.
- If the product is expected to be able to connect to arbitrary IP addresses or domains, consider using a denylist that includes private network addresses, internal domain names, etc. The denylist could be in the application code or possibly enforced by firewalls or network segmentation.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Other references
- access.redhat.com/errata/RHSA-2026:82785
- access.redhat.com/errata/RHSA-2026:82813
- access.redhat.com/errata/RHSA-2026:83480
- access.redhat.com/errata/RHSA-2026:83502
- access.redhat.com/errata/RHSA-2026:83541
- access.redhat.com/errata/RHSA-2026:83702
- access.redhat.com/errata/RHSA-2026:89715
- access.redhat.com/errata/RHSA-2026:89726
- access.redhat.com/errata/RHSA-2026:90274
- access.redhat.com/errata/RHSA-2026:95746
- access.redhat.com/errata/RHSA-2026:96283
- access.redhat.com/security/cve/CVE-2026-75888
- bugzilla.redhat.com/show_bug.cgi?id=2517888
Other vulnerabilities in Red Hat OpenShift Container Platform 4.12
- 7.7 High severity
- 7.5 High severity
- 9.3 Critical severity
- 7.4 High severity
- 7.5 High severity
- 7.6 High severity
Recent Server-Side Request Forgery vulnerabilities
- 8.6 High severity
- 8.5 High severity
- 8.5 High severity
- 7.3 High severity
- 7.2 High severity
- 8.7 High severity
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