Vulnerability · Published Nov 13, 2023 · Assigned by jpcert
CVE-2023-47163
High 7.5
In plain English
A high-severity security flaw in Remarshal from Remarshal-project. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 62% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)1.0%top 38.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | remarshal | 0.17.1 | GHSA-gw7g-qr8w-3448 |
| PyPI | remarshal | 0.17.1 | PYSEC-2023-236 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Remarshal-project | Remarshal | prior to v0.17.1 |