VDB
DEBIAN-CVE-2019-20477
DEBIAN-CVE-2019-20477
PUBLISHED
CVSS 9.800000190734863 CRITICAL
Record from OSV · Published February 19, 2020
PyYAML 5.1 through 5.1.2 has insufficient restrictions on the load and load_all functions because of a class deserialization issue, e.g., Popen is a class in the subprocess module. NOTE: this issue exists because of an incomplete fix for CVE-2017-18342.
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| pyyaml | Debian:14 | 5.2-1 |
| pyyaml | Debian:13 | 5.2-1 |
| pyyaml | Debian:12 | 5.2-1 |
Risk scores
CVSS 3.1
9.800000190734863
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Debian:14 | pyyaml | 0 |
| Debian:13 | pyyaml | 0 |
| Debian:12 | pyyaml | 0 |
Timeline
- Feb 19, 2020 CVE Published
- Sep 21, 2026 CVE Updated
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