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01 Record

CVE-2026-54335

Feathersjs: Prototype pollution in @feathersjs/commons _.merge via JSON-parsed __proto__

LowPUBLISHEDCNA: GitHub_M
CNA base score3.7 CVSS v3.xCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
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02 Description

Feathersjs: Prototype pollution in @feathersjs/commons _.merge via JSON-parsed __proto__

03 Exploitation and scoring

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 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
0.38% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 32.7% of scored records. A rank, not a probability.
NVD base score
3.7 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
NVD analysis status
Deferred. NVD last modified this record on 2026-10-24.
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.

04 Metadata

Published
2026-07-17 20:56Z3 MO AGO
Last updated
2026-07-20 17:38Z3 MO AGO
Reserved
2026-06-12
Assigning CNA
GitHub_M
Record state
PUBLISHED
Severity
Low (CVSS 3.7)
CNA CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Weaknesses
  • CWE-1321Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')Variant
Data version
5.2
Document digest
b8bb0b676f65b28eb51005c1ee063e1796d4dd316075bd6dde94e58946dcbcdf

05 Affected products

VendorProductVersionsPlatforms
feathersjsfeathers< 5.0.45—

06 References