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01 Record

CVE-2026-47209

vm2: Bridge Proxy set trap ignores receiver parameter, enabling host object property injection via prototype chain

HighPUBLISHEDCNA: GitHub_M
CNA base score8.6 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

02 Description

vm2: Bridge Proxy set trap ignores receiver parameter, enabling host object property injection via prototype chain

03 Exploitation and scoring

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
0.28% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 21.0% of scored records. A rank, not a probability.
NVD base score
8.6 (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:C/C:N/I:H/A:N
NVD analysis status
Deferred. NVD last modified this record on 2026-10-26.
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.

04 Metadata

Published
2026-06-12 14:14Z4 MO AGO
Last updated
2026-06-12 15:03Z4 MO AGO
Reserved
2026-05-18
Assigning CNA
GitHub_M
Record state
PUBLISHED
Severity
High (CVSS 8.6)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
Weaknesses
  • CWE-693Protection Mechanism FailurePillar
  • CWE-915Improperly Controlled Modification of Dynamically-Determined Object AttributesBase
Data version
5.2
Document digest
40f488be335df64ed3c94ac80a31aef28b47437ad159fc57332ca95a55987bc6

05 Affected products

VendorProductVersionsPlatforms
patriksimekvm2< 3.11.4—

06 References