Resource exhaustion in Naturalintelligence Fast-xml-parser
CVE-2023-34104
fast-xml-parser is an open source, pure javascript xml parser. fast-xml-parser allows special characters in entity names, which are not escaped or sanitized. Since the entity name is used for creating a regex for searching and replacing en…
Vulnerability class: DoS (Denial of Service)
EPSS: 0.006 (69.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Naturalintelligence Fast-xml-parser — versions >= 4.1.3, < 4.2.4
Weakness classification (CWE)
Public proof-of-concept exploits
References
- https://github.com/NaturalIntelligence/fast-xml-parser/security/advisories/GHSA-6w63-h3fj-q4vw (x_refsource_CONFIRM)
- https://github.com/NaturalIntelligence/fast-xml-parser/commit/39b0e050bb909e8499478657f84a3076e39ce76c (x_refsource_MISC)
- https://github.com/NaturalIntelligence/fast-xml-parser/commit/a4bdced80369892ee413bf08e28b78795a2b0d5b (x_refsource_MISC)
Frequently asked questions
- What is CVE-2023-34104?
- CVE-2023-34104 is a high-severity vulnerability in Naturalintelligence Fast-xml-parser, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2023-06-06.
- How severe is CVE-2023-34104?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2023-34104 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.