CVE-2021-23509
MediumPublic PoC
Published: 03 November 2021
Published
03 November 2021
Modified
21 November 2024
KEV Added
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Patch
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CVSS Score v3.1
5.6
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
EPSS Score
0.0175
83.0th percentile
Risk Priority
12
60% EPSS · 20% KEV · 20% CVSS
Summary
CVE-2021-23509 is a medium-severity Type Confusion (CWE-843) vulnerability in Json-Ptr Project Json-Ptr. Its CVSS base score is 5.6 (Medium).
Operationally, ranked in the top 17.0% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-2324
Vulnerability details
This affects the package json-ptr before 3.0.0. A type confusion vulnerability can lead to a bypass of CVE-2020-7766 when the user-provided keys used in the pointer parameter are arrays.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
json-ptr project
json-ptr
≤ 3.0.0
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.