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CVE-2026-8657

Versions of the package jsondiffpatch before 0.7.6 are vulnerable to Prototype Pollution via the jsondiffpatch.patch() and jsondiffpatch/formatters/jsonpatch.patch() APIs. An attacker can perform prototype pollution by supplying crafted delta or JSON Patch documents, as attacker-controlled property names and path segments are used to traverse and modify objects without restricting access to special properties like __proto__ or constructor.prototype, allowing modification of Object.prototype.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:6da09b5cd9f0747d0c44949fad9e195baac644416933ade83ca823202e4147f6
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
3

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"product":"org.webjars.npm:jsondiffpatch","vendor":"n/a","versions":[{"lessThan":"*","status":"affected","version":"0","versionType":"semver"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:51d5353c8f291f58cdf654aa2a43b8ce83b602bd21a11f16f7b9349df6f3b2f8 · sha256:166d9e2a5cd9406f… · /containers/cna/affected/1

{"product":"jsondiffpatch","vendor":"n/a","versions":[{"lessThan":"0.7.6","status":"affected","version":"0","versionType":"semver"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:51d5353c8f291f58cdf654aa2a43b8ce83b602bd21a11f16f7b9349df6f3b2f8 · sha256:166d9e2a5cd9406f… · /containers/cna/affected/0
cvss · 2 assertions

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":8.2,"baseSeverity":"HIGH","confidentialityImpact":"NONE","exploitCodeMaturity":"PROOF_OF_CONCEPT","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L/E:P","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:51d5353c8f291f58cdf654aa2a43b8ce83b602bd21a11f16f7b9349df6f3b2f8 · sha256:166d9e2a5cd9406f… · /containers/cna/metrics/0/cvssV3_1

{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.8,"baseSeverity":"HIGH","exploitMaturity":"PROOF_OF_CONCEPT","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:51d5353c8f291f58cdf654aa2a43b8ce83b602bd21a11f16f7b9349df6f3b2f8 · sha256:166d9e2a5cd9406f… · /containers/cna/metrics/0/cvssV4_0
cwe · 2 assertions

{"cweId":"CWE-1321","description":"Prototype Pollution","lang":"en"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:51d5353c8f291f58cdf654aa2a43b8ce83b602bd21a11f16f7b9349df6f3b2f8 · sha256:166d9e2a5cd9406f… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-1321","description":"CWE-1321 Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:51d5353c8f291f58cdf654aa2a43b8ce83b602bd21a11f16f7b9349df6f3b2f8 · sha256:166d9e2a5cd9406f… · /containers/adp/0/problemTypes/0/descriptions/0

Affected products and versions

2 source assertions
{"product":"org.webjars.npm:jsondiffpatch","vendor":"n/a","versions":[{"lessThan":"*","status":"affected","version":"0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:51d5353c8f291f58cdf654aa2a43b8ce83b602bd21a11f16f7b9349df6f3b2f8 · sha256:166d9e2a5cd9406f… · /containers/cna/affected/1
{"product":"jsondiffpatch","vendor":"n/a","versions":[{"lessThan":"0.7.6","status":"affected","version":"0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:51d5353c8f291f58cdf654aa2a43b8ce83b602bd21a11f16f7b9349df6f3b2f8 · sha256:166d9e2a5cd9406f… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":8.2,"baseSeverity":"HIGH","confidentialityImpact":"NONE","exploitCodeMaturity":"PROOF_OF_CONCEPT","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L/E:P","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:51d5353c8f291f58cdf654aa2a43b8ce83b602bd21a11f16f7b9349df6f3b2f8 · sha256:166d9e2a5cd9406f… · /containers/cna/metrics/0/cvssV3_1
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.8,"baseSeverity":"HIGH","exploitMaturity":"PROOF_OF_CONCEPT","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:51d5353c8f291f58cdf654aa2a43b8ce83b602bd21a11f16f7b9349df6f3b2f8 · sha256:166d9e2a5cd9406f… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-1321","description":"Prototype Pollution","lang":"en"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:51d5353c8f291f58cdf654aa2a43b8ce83b602bd21a11f16f7b9349df6f3b2f8 · sha256:166d9e2a5cd9406f… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-1321","description":"CWE-1321 Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:51d5353c8f291f58cdf654aa2a43b8ce83b602bd21a11f16f7b9349df6f3b2f8 · sha256:166d9e2a5cd9406f… · /containers/adp/0/problemTypes/0/descriptions/0

Source references

9 source assertions
{"url":"https://gist.github.com/yuki-matsuhashi/e570fb1579ae1f3190059b622b0473fb"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:51d5353c8f291f58cdf654aa2a43b8ce83b602bd21a11f16f7b9349df6f3b2f8 · sha256:166d9e2a5cd9406f… · /containers/cna/references/2
{"tags":["exploit"],"url":"https://gist.github.com/yuki-matsuhashi/e570fb1579ae1f3190059b622b0473fb"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:51d5353c8f291f58cdf654aa2a43b8ce83b602bd21a11f16f7b9349df6f3b2f8 · sha256:166d9e2a5cd9406f… · /containers/adp/0/references/0
{"url":"https://github.com/benjamine/jsondiffpatch/blob/96112c35a98f9201dd75d67fcee68a952c79e2fe/packages/jsondiffpatch/src/filters/nested.ts%23L107-L115"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:51d5353c8f291f58cdf654aa2a43b8ce83b602bd21a11f16f7b9349df6f3b2f8 · sha256:166d9e2a5cd9406f… · /containers/cna/references/4
{"url":"https://github.com/benjamine/jsondiffpatch/blob/96112c35a98f9201dd75d67fcee68a952c79e2fe/packages/jsondiffpatch/src/filters/nested.ts%23L82-L87"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:51d5353c8f291f58cdf654aa2a43b8ce83b602bd21a11f16f7b9349df6f3b2f8 · sha256:166d9e2a5cd9406f… · /containers/cna/references/3
{"url":"https://github.com/benjamine/jsondiffpatch/blob/96112c35a98f9201dd75d67fcee68a952c79e2fe/packages/jsondiffpatch/src/formatters/jsonpatch-apply.ts%23L146-L168"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:51d5353c8f291f58cdf654aa2a43b8ce83b602bd21a11f16f7b9349df6f3b2f8 · sha256:166d9e2a5cd9406f… · /containers/cna/references/5
{"url":"https://github.com/benjamine/jsondiffpatch/blob/96112c35a98f9201dd75d67fcee68a952c79e2fe/packages/jsondiffpatch/src/formatters/jsonpatch-apply.ts%23L171-L199"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:51d5353c8f291f58cdf654aa2a43b8ce83b602bd21a11f16f7b9349df6f3b2f8 · sha256:166d9e2a5cd9406f… · /containers/cna/references/6
{"url":"https://github.com/benjamine/jsondiffpatch/commit/381c0125efab49f6f0dbc08317d01d55717672af"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:51d5353c8f291f58cdf654aa2a43b8ce83b602bd21a11f16f7b9349df6f3b2f8 · sha256:166d9e2a5cd9406f… · /containers/cna/references/7
{"url":"https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-16732792"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:51d5353c8f291f58cdf654aa2a43b8ce83b602bd21a11f16f7b9349df6f3b2f8 · sha256:166d9e2a5cd9406f… · /containers/cna/references/1
{"url":"https://security.snyk.io/vuln/SNYK-JS-JSONDIFFPATCH-16322990"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:51d5353c8f291f58cdf654aa2a43b8ce83b602bd21a11f16f7b9349df6f3b2f8 · sha256:166d9e2a5cd9406f… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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