Vulnerability in Github.com/go-yaml/yaml
CVE-2021-4235
Due to unbounded alias chasing, a maliciously crafted YAML file can cause the system to consume significant system resources. If parsing user input, this may be used as a denial of service vector.
EPSS: 0.004 (33.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
Affected products
Public proof-of-concept exploits
References
- security@golang.org (Exploit, Patch, Third Party Advisory)
- security@golang.org (Patch, Third Party Advisory)
- security@golang.org (Third Party Advisory)
- security@golang.org
Frequently asked questions
- What is CVE-2021-4235?
- CVE-2021-4235 is a medium-severity vulnerability in Github.com/go-yaml/yaml. CVSS score: 5.5/10. Published 2022-12-27.
- How severe is CVE-2021-4235?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2021-4235 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.