CVE-2026-85700

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.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• 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

0.51% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 43.3% of scored records. A rank, not a probability.

NVD base score

7.1 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Deferred. NVD last modified this record on 2026-09-23.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

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

2026-09-04 14:32Z1 MO AGO

Last updated

2026-09-04 14:55Z1 MO AGO

Reserved

2026-09-04

Assigning CNA

VulnCheck

Record state

PUBLISHED

Severity

High (CVSS 7.1)

CNA CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Weaknesses

• CWE-522Insufficiently Protected CredentialsClass

Data version

5.2

Document digest

f6ac24c30f1878dd5388aede359c10dcbfbcece0b11a288c21ae92afafd6a7e3

• github.comGitHub Issue #13165https://github.com/onyx-dot-app/onyx/issues/13165issue-tracking
• github.comhttps://github.com/onyx-dot-app/onyxproduct
• github.comhttps://github.com/onyx-dot-app/onyx/blob/v4.6.6/backend/onyx/server/features/tool/models.pytechnical-description
• github.comhttps://github.com/onyx-dot-app/onyx/blob/v4.6.6/backend/onyx/server/features/tool/api.pytechnical-description
• www.vulncheck.comVulnCheck Advisory: Onyx 4.6.6 Custom Tool Secret Header Disclosure via Tool Endpointshttps://www.vulncheck.com/advisories/onyx-4.6.6-custom-tool-secret-header-disclosure-via-tool-endpointsthird-party-advisory