What is CVE-2023-28118?

CVE-2023-28118 is a high-severity vulnerability in Charleskorn Kaml, classified under Improper Restriction of Recursive Entity References in DTDs (XML Entity Expansion). CVSS score: 7.5/10. Published 2023-03-20.

How severe is CVE-2023-28118?

High severity. CVSS v3 base score is 7.5 out of 10.

XXE in Charleskorn Kaml

CVE-2023-28118

kaml provides YAML support for kotlinx.serialization. Prior to version 0.53.0, applications that use kaml to parse untrusted input containing anchors and aliases may consume excessive memory and crash. Version 0.53.0 and later default to r…

EPSS: 0.003 (55.8th 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

Charleskorn Kaml — versions < 0.53.0

Weakness classification (CWE)

CWE-776 — Improper Restriction of Recursive Entity References in DTDs (XML Entity Expansion)

References

https://github.com/charleskorn/kaml/security/advisories/GHSA-c24f-2j3g-rg48 (x_refsource_CONFIRM)
https://github.com/charleskorn/kaml/commit/5f82a2d7e00bfc307afca05d1dc4d7c50593531a (x_refsource_MISC)
https://github.com/charleskorn/kaml/releases/tag/0.53.0 (x_refsource_MISC)

Frequently asked questions

What is CVE-2023-28118?: CVE-2023-28118 is a high-severity vulnerability in Charleskorn Kaml, classified under Improper Restriction of Recursive Entity References in DTDs (XML Entity Expansion). CVSS score: 7.5/10. Published 2023-03-20.
How severe is CVE-2023-28118?: High severity. CVSS v3 base score is 7.5 out of 10.