CVE-2026-78847

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.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• 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

0.59% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 48.1% of scored records. A rank, not a probability.

NVD base score

9.8 (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:H/I:H/A:H

NVD analysis status

Deferred. NVD last modified this record on 2026-09-22.

Red Hat severity

Important. 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

2026-09-21 00:00Z1 MO AGO

Last updated

2026-09-22 15:12Z1 MO AGO

Reserved

2026-08-25

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

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

Weaknesses

• CWE-95Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')Variant
• CWE-94Improper Control of Generation of Code ('Code Injection')Base

Data version

5.2

Document digest

81da16b8ac6921dfaa8f3461ba92e4313b89d36d88ca7840c8e50681b1931588

• github.comhttps://github.com/jonschlinkert/gray-matter/issues/182
• github.comhttps://github.com/jonschlinkert/gray-matter/issues/131
• github.comhttps://github.com/jonschlinkert/gray-matter/issues/112
• blog.checo.cchttps://blog.checo.cc/en/posts/Security/1