CVE-2026-2256

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 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

1.70% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 77.1% of scored records. A rank, not a probability.

NVD base score

6.5 (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:L/I:L/A:N

NVD analysis status

Awaiting Analysis. NVD last modified this record on 2026-06-17.

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

2026-03-02 20:09Z8 MO AGO

Last updated

2026-03-03 20:07Z7 MO AGO

Reserved

2026-02-09

Assigning CNA

certcc

Record state

PUBLISHED

Severity

Medium (CVSS 6.5)

CNA CVSS vector

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

Weaknesses

• CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')Class

Data version

5.2

Document digest

6918e575b4d5a0a85935fb6aac91f6eeaf1570b1dfb4e6055f88d2cd9de95cae

• github.comhttps://github.com/modelscope/ms-agent
• www.hiddenlayer.comhttps://www.hiddenlayer.com/research/indirect-prompt-injection-of-claude-computer-use
• medium.comhttps://medium.com/@itamar.yochpaz/cve-2026-2256-from-ai-prompt-to-full-system-compromise-a4114c718326
• github.comhttps://github.com/Itamar-Yochpaz/CVE-2026-2256-PoC
• www.kb.cert.orghttps://www.kb.cert.org/vuls/id/431821