CVE Explorer
CVE-2026-26021
set-in provides the set value of nested associative structure given array of keys. A prototype pollution vulnerability exists in the the npm package set-in (>=2.0.1, < 2.0.5). Despite a previous fix that attempted to mitigate prototype pollution by checking whether user input contained a forbidden key, it is still possible to pollute Object.prototype via a crafted input using Array.prototype. This has been fixed in version 2.0.5.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"set-in","vendor":"ahdinosaur","versions":[{"status":"affected","version":">= 2.0.1, < 2.0.5"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:5833738dc14e0cdff43e6b69f3a30361bf039953cf26a21d1486c3f61da0f159 · sha256:57996b80af6153fc… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"LOCAL","baseScore":9.4,"baseSeverity":"CRITICAL","privilegesRequired":"NONE","subAvailabilityImpact":"HIGH","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:5833738dc14e0cdff43e6b69f3a30361bf039953cf26a21d1486c3f61da0f159 · sha256:57996b80af6153fc… · /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_v5cweurn:baitaphish:normalized-source-record:v2:5833738dc14e0cdff43e6b69f3a30361bf039953cf26a21d1486c3f61da0f159 · sha256:57996b80af6153fc… · /containers/cna/problemTypes/0/descriptions/0
Source references
2 source assertions{"name":"https://github.com/ahdinosaur/set-in/commit/b8e1dabfdbd35c8d604b6324e01d03f280256c3d","tags":["x_refsource_MISC"],"url":"https://github.com/ahdinosaur/set-in/commit/b8e1dabfdbd35c8d604b6324e01d03f280256c3d"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:5833738dc14e0cdff43e6b69f3a30361bf039953cf26a21d1486c3f61da0f159 · sha256:57996b80af6153fc… · /containers/cna/references/1
{"name":"https://github.com/ahdinosaur/set-in/security/advisories/GHSA-2c4m-g7rx-63q7","tags":["x_refsource_CONFIRM"],"url":"https://github.com/ahdinosaur/set-in/security/advisories/GHSA-2c4m-g7rx-63q7"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:5833738dc14e0cdff43e6b69f3a30361bf039953cf26a21d1486c3f61da0f159 · sha256:57996b80af6153fc… · /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.