CVE-2026-86472

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.
• 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

0.25% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 16.5% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Awaiting Analysis. NVD last modified this record on 2026-09-16.

Red Hat severity

Moderate. 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

2026-09-15 10:29Z1 MO AGO

Last updated

2026-09-15 12:35Z1 MO AGO

Reserved

2026-09-07

Assigning CNA

openjs

Record state

PUBLISHED

Severity

Medium (CVSS 4.8)

CNA CVSS vector

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

Weaknesses

• CWE-178Improper Handling of Case SensitivityBase

Data version

5.2

Document digest

02988c52ed624d994b0a953ba2cbd8a2e887c11a6b6a5402444a71a4c0cb57f3

• github.comhttps://github.com/fastify/fast-uri/security/advisories/GHSA-hrr3-gc8f-f4qj
• cna.openjsf.orghttps://cna.openjsf.org/security-advisories.html