CVE Explorer

CVE-2026-46681

@nevware21/ts-utils is a comprehensive TypeScript/JavaScript utility library. Prior to version 0.14.0, the _copyProps function in lib/src/object/copy.ts uses for...in to iterate over source object properties without an Object.hasOwnProperty check, and does not filter dangerous keys (__proto__, constructor, prototype). This allows an attacker to pollute the prototype chain of all objects in the application. Version 0.14.0 patches the issue.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:7fbc7d76a5017d181ab66796ffbad676f5436b07a60fc5a199cfb5ef2162238f

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"ts-utils","vendor":"nevware21","versions":[{"status":"affected","version":"< 0.14.0"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:de2dbd9ee601ee9bc666cd6a8f9b0c64466c1c484f26a9cf5c4aa8d75cd350ef · sha256:48682f287847e1ae… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":7.2,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:de2dbd9ee601ee9bc666cd6a8f9b0c64466c1c484f26a9cf5c4aa8d75cd350ef · sha256:48682f287847e1ae… · /containers/cna/metrics/0/cvssV4_0

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:de2dbd9ee601ee9bc666cd6a8f9b0c64466c1c484f26a9cf5c4aa8d75cd350ef · sha256:48682f287847e1ae… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions

{"name":"https://github.com/nevware21/ts-utils/commit/5e887f4e2fbee7160c8f501634c45e6a229e83bb","tags":["x_refsource_MISC"],"url":"https://github.com/nevware21/ts-utils/commit/5e887f4e2fbee7160c8f501634c45e6a229e83bb"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:de2dbd9ee601ee9bc666cd6a8f9b0c64466c1c484f26a9cf5c4aa8d75cd350ef · sha256:48682f287847e1ae… · /containers/cna/references/1

{"name":"https://github.com/nevware21/ts-utils/security/advisories/GHSA-x7j8-49r8-mr43","tags":["x_refsource_CONFIRM"],"url":"https://github.com/nevware21/ts-utils/security/advisories/GHSA-x7j8-49r8-mr43"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:de2dbd9ee601ee9bc666cd6a8f9b0c64466c1c484f26a9cf5c4aa8d75cd350ef · sha256:48682f287847e1ae… · /containers/cna/references/0

{"tags":["exploit"],"url":"https://github.com/nevware21/ts-utils/security/advisories/GHSA-x7j8-49r8-mr43"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:de2dbd9ee601ee9bc666cd6a8f9b0c64466c1c484f26a9cf5c4aa8d75cd350ef · sha256:48682f287847e1ae… · /containers/adp/0/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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