CVE-2026-9595

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

0.16% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 5.4% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

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

2026-06-15 15:00Z4 MO AGO

Last updated

2026-06-15 16:08Z4 MO AGO

Reserved

2026-05-26

Assigning CNA

openjs

Record state

PUBLISHED

Severity

Medium (CVSS 5.3)

CNA CVSS vector

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

Weaknesses

• CWE-346Origin Validation ErrorClass
• CWE-441Unintended Proxy or Intermediary ('Confused Deputy')Class

Data version

5.2

Document digest

7bd537255538b45ca587cdf952019770ab41c36986555dd9f3e19d9c84515144

• github.comhttps://github.com/webpack/webpack-dev-server/security/advisories/GHSA-mx8g-39q3-5c79
• cna.openjsf.orghttps://cna.openjsf.org/security-advisories.html
• github.comhttps://github.com/webpack/webpack-dev-server/pull/4316
• github.comhttps://github.com/vuejs/vue-cli/commit/72ba7505aff2a8314e82aa5082379a77504a1fcb
• github.comhttps://github.com/facebook/create-react-app/pull/7444