CVE-2023-26920 : fast-xml-parser before 4.1.2 allows __proto_

fast-xml-parser before 4.1.2 allows __proto__ for Prototype Pollution.

Published 2023-12-12 17:15:08

Updated 2023-12-14 20:41:20

Source MITRE

View at NVD, CVE.org

Products affected by CVE-2023-26920

Naturalintelligence » Fast Xml Parser
Versions before (<) 4.1.2
cpe:2.3:a:naturalintelligence:fast_xml_parser:*:*:*:*:*:*:*:*
Matching versions

EPSS FAQ

0.12%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 46 %

Percentile, the proportion of vulnerabilities that are scored at or less

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source	First Seen
6.5	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N	2.8	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: High Integrity: None Availability: None

CWE-1321 Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype.

Assigned by: nvd@nist.gov (Primary)

https://github.com/advisories/GHSA-793h-6f7r-6qvm

Druid ingestion system Authenticated users can read data from other sources than intended · CVE-2021-26920 · GitHub Advisory Database · GitHub
Third Party Advisory
https://github.com/NaturalIntelligence/fast-xml-parser/commit/2b032a4f799c63d83991e4f992f1c68e4dd05804

Update package detail · NaturalIntelligence/fast-xml-parser@2b032a4 · GitHub
Patch
https://gist.github.com/Sudistark/a5a45bd0804d522a1392cb5023aa7ef7

report.md · GitHub
Exploit

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