VulnerabilityModified
CVE-2021-3918
json-schema is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
CRITICAL 9.8EPSS 3.83%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.83%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
json-schema is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 3.83% probability · 89th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-1321
- Affected
- json-schema project/json-schema · debian/debian linux
- Source
- security@huntr.dev
References
- https://github.com/kriszyp/json-schema/commit/22f146111f541d9737e832823699ad3528ca7741Patch, Third Party Advisory
- https://huntr.dev/bounties/bb6ccd63-f505-4e3a-b55f-cd2662c261a9Exploit, Issue Tracking, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/12/msg00013.htmlMailing List, Third Party Advisory
- https://github.com/kriszyp/json-schema/commit/22f146111f541d9737e832823699ad3528ca7741Patch, Third Party Advisory
- https://huntr.dev/bounties/bb6ccd63-f505-4e3a-b55f-cd2662c261a9Exploit, Issue Tracking, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/12/msg00013.htmlMailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20250117-0004/
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.