VulnerabilityModified
CVE-2023-26920
fast-xml-parser before 4.1.2 allows __proto__ for Prototype Pollution.
MEDIUM 6.5EPSS 1.15%
Does this matter?
Lower severity and a low EPSS score (1.15%). Track it; it rarely justifies an emergency change on its own.
Description
fast-xml-parser before 4.1.2 allows __proto__ for Prototype Pollution.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 1.15% probability · 66th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-1321
- Affected
- naturalintelligence/fast xml parser
- Source
- cve@mitre.org
EPSS 1.2% since 10 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://gist.github.com/Sudistark/a5a45bd0804d522a1392cb5023aa7ef7Exploit
- https://github.com/NaturalIntelligence/fast-xml-parser/commit/2b032a4f799c63d83991e4f992f1c68e4dd05804Patch
- https://github.com/advisories/GHSA-793h-6f7r-6qvmThird Party Advisory
- https://gist.github.com/Sudistark/a5a45bd0804d522a1392cb5023aa7ef7Exploit
- https://github.com/NaturalIntelligence/fast-xml-parser/commit/2b032a4f799c63d83991e4f992f1c68e4dd05804Patch
- https://github.com/advisories/GHSA-793h-6f7r-6qvmThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.