CVE-2026-28500

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.32% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 25.1% of scored records. A rank, not a probability.

NVD base score

9.1 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

NVD analysis status

Modified. NVD last modified this record on 2026-07-15.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-03-18 01:15Z7 MO AGO

Last updated

2026-07-15 01:11Z3 MO AGO

Reserved

2026-02-27

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

High (CVSS 8.6)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

Weaknesses

• CWE-345Insufficient Verification of Data AuthenticityClass
• CWE-494Download of Code Without Integrity CheckBase
• CWE-693Protection Mechanism FailurePillar
• CWE-829Inclusion of Functionality from Untrusted Control SphereBase

Data version

5.2

Document digest

59ae6f29e91a23ee04ad65046f2aeb0bf0e5c938b91cfa8b96209619f419194d

• github.comhttps://github.com/onnx/onnx/security/advisories/GHSA-hqmj-h5c6-369mx_refsource_CONFIRM
• github.comhttps://github.com/ZeroXJacks/CVEs/blob/main/2026/CVE-2026-28500.mdx_refsource_MISC
• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-28500vdb-entryx_refsource_REDHAT
• bugzilla.redhat.comRHBZ#2448518https://bugzilla.redhat.com/show_bug.cgi?id=2448518issue-trackingx_refsource_REDHAT
• security.access.redhat.comhttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-28500.jsonx_sadp-csaf-vex
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:24977vendor-advisoryx_refsource_REDHAT