CVE-2026-63626

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 ImpacttotalSuccessful exploitation gives total 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

0.23% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 14.7% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Deferred. NVD last modified this record on 2026-10-16.

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

2026-10-14 18:26Z15 DAYS AGO

Last updated

2026-10-15 15:06Z14 DAYS AGO

Reserved

2026-07-17

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

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

Weaknesses

• CWE-122Heap-based Buffer OverflowVariant
• CWE-125Out-of-bounds ReadBase

Data version

5.2

Document digest

b832f93b36e44d90607093a7beac65391637123c51bf726e0b660bd2098fa1fb

• github.comhttps://github.com/cesanta/mongoose/security/advisories/GHSA-pc66-j6r6-49x9x_refsource_CONFIRM
• github.comhttps://github.com/cesanta/mongoose/commit/751f14742dea934bec08a507ab1fecc3673d4903x_refsource_MISC
• github.comhttps://github.com/cesanta/mongoose/releases/tag/7.23x_refsource_MISC