CVE Explorer

CVE-2026-48819

Hey API is an ecosystem for turning API specifications into production-ready code. Prior to 0.97.3, dist/clients/core/params.ts ships a runtime template copied into generated SDKs as params.gen.ts, and buildClientParams writes unknown slot-prefixed keys such as $body_, $headers_, $path_, and $query_ directly to the corresponding slot, allowing $query___proto__ alongside a legitimate q field to set params.query through params["query"]["__proto__"] = value, call Object.setPrototypeOf(params.query,

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:364974ef50cb508837284805b1149ac245ad5b797a1cffea8a1e7edad78a39e0

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"openapi-ts","vendor":"hey-api","versions":[{"status":"affected","version":"< 0.97.3"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:892533b3852dddc3973d76d21a571b1707dd0c979291a542daecd1269aba842a · sha256:62c086c403bfdcde… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.8,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:892533b3852dddc3973d76d21a571b1707dd0c979291a542daecd1269aba842a · sha256:62c086c403bfdcde… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"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:v2:892533b3852dddc3973d76d21a571b1707dd0c979291a542daecd1269aba842a · sha256:62c086c403bfdcde… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions

{"name":"https://github.com/hey-api/hey-api/commit/023909137a15eff9c0263d3bcd116140076b214f","tags":["x_refsource_MISC"],"url":"https://github.com/hey-api/hey-api/commit/023909137a15eff9c0263d3bcd116140076b214f"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:892533b3852dddc3973d76d21a571b1707dd0c979291a542daecd1269aba842a · sha256:62c086c403bfdcde… · /containers/cna/references/1

{"name":"https://github.com/hey-api/hey-api/commit/da321a1529eb3c90d2109da870f514b915a60169","tags":["x_refsource_MISC"],"url":"https://github.com/hey-api/hey-api/commit/da321a1529eb3c90d2109da870f514b915a60169"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:892533b3852dddc3973d76d21a571b1707dd0c979291a542daecd1269aba842a · sha256:62c086c403bfdcde… · /containers/cna/references/2

{"name":"https://github.com/hey-api/hey-api/releases/tag/%40hey-api%2Fopenapi-ts%400.97.3","tags":["x_refsource_MISC"],"url":"https://github.com/hey-api/hey-api/releases/tag/%40hey-api%2Fopenapi-ts%400.97.3"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:892533b3852dddc3973d76d21a571b1707dd0c979291a542daecd1269aba842a · sha256:62c086c403bfdcde… · /containers/cna/references/3

{"tags":["exploit"],"url":"https://github.com/hey-api/hey-api/security/advisories/GHSA-hhx9-57xq-r5rw"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:892533b3852dddc3973d76d21a571b1707dd0c979291a542daecd1269aba842a · sha256:62c086c403bfdcde… · /containers/adp/0/references/0

{"name":"https://github.com/hey-api/hey-api/security/advisories/GHSA-hhx9-57xq-r5rw","tags":["x_refsource_CONFIRM"],"url":"https://github.com/hey-api/hey-api/security/advisories/GHSA-hhx9-57xq-r5rw"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:892533b3852dddc3973d76d21a571b1707dd0c979291a542daecd1269aba842a · sha256:62c086c403bfdcde… · /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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