What is CVE-2023-47163?

CVE-2023-47163 is a high-severity vulnerability in Remarshal-Project Remarshal, classified under Uncontrolled Recursion. CVSS score: 7.5/10. Published 2023-11-13.

How severe is CVE-2023-47163?

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

Vulnerability in Remarshal-Project Remarshal

CVE-2023-47163

Remarshal prior to v0.17.1 expands YAML alias nodes unlimitedly, hence Remarshal is vulnerable to Billion Laughs Attack. Processing untrusted YAML files may cause a denial-of-service (DoS) condition.

Published 2023-11-13 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.010 (60.5th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 60.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Remarshal-Project Remarshal — versions prior to v0.17.1
Remarshal Project

Weakness classification (CWE)

CWE-674 — Uncontrolled Recursion

References

github.com/remarshal-project/remarshal/releases/tag/v0.17.1 (Release Notes)
github.com/remarshal-project/remarshal/commit/fd6ac799a02f533c3fc243b49cdd6d21a… (Patch)
jvn.jp/en/jp/JVN86156389/ (Third Party Advisory)

Frequently asked questions

What is CVE-2023-47163?: CVE-2023-47163 is a high-severity vulnerability in Remarshal-Project Remarshal, classified under Uncontrolled Recursion. CVSS score: 7.5/10. Published 2023-11-13.
How severe is CVE-2023-47163?: High severity. CVSS v3 base score is 7.5 out of 10.