Prototype Pollution in Naturalintelligence Fast Xml Parser
CVE-2023-26920
fast-xml-parser before 4.1.2 allows __proto__ for Prototype Pollution.
Vulnerability class: Prototype Pollution
EPSS: 0.012 (63.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Naturalintelligence Fast_xml_parser
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Exploit)
- cve@mitre.org (Third Party Advisory)
- cve@mitre.org (Patch)
Frequently asked questions
- What is CVE-2023-26920?
- CVE-2023-26920 is a medium-severity vulnerability in Naturalintelligence Fast Xml Parser, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 6.5/10. Published 2023-12-12.
- How severe is CVE-2023-26920?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2023-26920 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.