CVE-2023-47163

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-11-13 · updated 2026-06-17
Weakness: CWE-674

Description

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.

Affected products

Remarshal-project Remarshal: before 0.17.1 — fixed in 0.17.1

How to fix

Upgrade to a fixed version: Remarshal-project Remarshal 0.17.1. Check the vendor advisory for mitigations.

References

https://github.com/remarshal-project/remarshal/commit/fd6ac799a02f533c3fc243b49cdd6d21aa7ee494
https://github.com/remarshal-project/remarshal/releases/tag/v0.17.1
https://jvn.jp/en/jp/JVN86156389/
https://github.com/remarshal-project/remarshal/commit/fd6ac799a02f533c3fc243b49cdd6d21aa7ee494
https://github.com/remarshal-project/remarshal/releases/tag/v0.17.1
https://jvn.jp/en/jp/JVN86156389/

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