CVE-2026-18948: Red Hat OpenShift AI 2.25 · Deserialization of Untrusted Data
Affects Red Hat OpenShift AI 2.25Source CVE Database V5
Not known to be exploited · CVSS 9.9 Critical.
Data as of 8 Nov 2026, 23:24 UTC
- EPSS
- 1.0% chance of exploitation in 30 days – higher than 65% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 10 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 8 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Red HatRed Hat OpenShift AI 2.25 | Affected– | Fixed in– |
| Red HatRed Hat OpenShift AI 3.3 | Affected– | Fixed in– |
| Red HatRed Hat OpenShift AI 3.4 | Affected– | Fixed in– |
| Red HatRed Hat OpenShift AI 3.4 | Affected– | Fixed in– |
| Red HatRed Hat OpenShift AI (RHOAI) | Affected– | Fixed in– |
AI-suggested
Red Hat recommends configuring Feast to enforce `auth.type: kubernetes` in the operator-generated configuration and to deny registry writes by default. This mitigation restricts registry modifications to authenticated and authorized users, preventing the deserialization of malicious UDFs.
Description
A flaw was found in Feast. The system improperly deserializes user-defined functions (UDFs) stored in its registry, which are serialized using the 'dill' library. This allows a remote attacker to store a malicious UDF, leading to unauthenticated arbitrary code execution on the feature server in default configurations. An authenticated attacker can also achieve arbitrary code execution on the registry server by bypassing authorization checks during deserialization. This vulnerability can result in cross-tenant data access and lateral movement within the system.
References
- access.redhat.com/security/cve/CVE-2026-18948 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2511167 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:53263 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:53261 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:53262 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:60520 (opens in a new tab)