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Fencer Intel
medium —

CVE-2026-83494 json

Training-operator: pytorchjob validateupdate casts oldjob from newobj, bypassing managedby immutability (asvs v5.1.3; upstream bug)

published 5d ago modified 5d ago also EUVD-2026-117966

cvss
—
not scored
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 6%
public exploits
0
none known

Summary

A flaw was found in the training-operator. An incorrect object casting in the PyTorchJob ValidateUpdate webhook allows users to bypass an immutability check. This vulnerability could enable users to detach a queued job from its quota management system or hijack a running job's controller ownership. The primary impact is a Denial of Service (DoS) condition.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-83494 updated

training-operator: PyTorchJob ValidateUpdate casts oldJob from newObj, bypassing managedBy immutability (ASVS V5.1.3; upstream bug)

  • Red Hat OpenShift AI (RHOAI) rhoai
    under investigation

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.17% chance of exploitation in the next 30 days, higher than 6% of all scored CVEs (FIRST EPSS, 2026-11-11).

Affected products

  • Red Hat Red Hat OpenShift AI (RHOAI)

Classification

Weakness
  • CWE-693 Protection Mechanism Failure

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.