CVE-2026-84303

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• 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

0.31% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 23.7% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/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 2026-09-09.

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

2026-09-01 18:14Z1 MO AGO

Last updated

2026-09-02 19:14Z1 MO AGO

Reserved

2026-09-01

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

Medium (CVSS 6.3)

CNA CVSS vector

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

Weaknesses

• CWE-178Improper Handling of Case SensitivityBase
• CWE-863Incorrect AuthorizationClass

Data version

5.2

Document digest

98bd279c9a7f65fcd6120ca8d7b93d356e133eb2eca142ff9985e8fd1a4e3fef

• github.comhttps://github.com/grpc/grpc-go/security/advisories/GHSA-qc2q-p7wx-3px3x_refsource_CONFIRM
• github.comhttps://github.com/grpc/grpc-go/pull/9332x_refsource_MISC
• github.comhttps://github.com/grpc/grpc-go/pull/9335x_refsource_MISC
• github.comhttps://github.com/grpc/grpc-go/commit/db9482836c298f234c896cf82ab68cafc78237f8x_refsource_MISC
• github.comhttps://github.com/grpc/grpc-go/commit/ebba6f3f1b206e2b4dc4d1d5a96d18430302c2fex_refsource_MISC
• github.comhttps://github.com/grpc/grpc-go/releases/tag/v1.83.1x_refsource_MISC