CVE-2026-86040

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

0.67% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 51.3% of scored records. A rank, not a probability.

NVD base score

7.5 (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:N/I:N/A:H

NVD analysis status

Awaiting Analysis. NVD last modified this record on 2026-09-24.

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

2026-09-17 15:20Z1 MO AGO

Last updated

2026-09-17 19:19Z1 MO AGO

Reserved

2026-09-04

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

High (CVSS 7.5)

CNA CVSS vector

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

Weaknesses

• CWE-400Uncontrolled Resource ConsumptionClass
• CWE-401Missing Release of Memory after Effective LifetimeVariant
• CWE-770Allocation of Resources Without Limits or ThrottlingBase

Data version

5.2

Document digest

f1eff01fd81998dc366abe0b9488c3af1158c248cc7fe3e0e103188dcae47c4f

• github.comhttps://github.com/libp2p/js-libp2p/security/advisories/GHSA-cvfg-hcf3-ggwvx_refsource_CONFIRM
• github.comhttps://github.com/libp2p/js-libp2p/pull/3568x_refsource_MISC
• github.comhttps://github.com/libp2p/js-libp2p/commit/fb9e8a76e9ac75924928fae4ce11d00f68320a83x_refsource_MISC
• github.comhttps://github.com/libp2p/js-libp2p/releases/tag/floodsub-v11.0.26x_refsource_MISC