PatchTheCVEpyyaml vulnerabilities and fixes
Recent CVEs affecting pyyaml, with upgrade or downgrade steps. 4 tracked.
pyyaml has 4 tracked vulnerabilities, 4 critical. A fixed release or vendor patch exists for 4. Most recent: 2021-02-09. Highest priority: CVE-2019-20477 (score 67/100).
- CVE-2020-1747 CRITICAL 9.8 UPGRADE MITIGATE A vulnerability was discovered in the PyYAML library in versions before 5.3.1, where it is susceptible to arbi
- CVE-2020-14343 CRITICAL 9.8 UPGRADE DOWNGRADE A vulnerability was discovered in the PyYAML library in versions before 5.4, where it is susceptible to arbitr
- CVE-2019-20477 CRITICAL 9.8 UPGRADE MITIGATE PyYAML 5.1 through 5.1.2 has insufficient restrictions on the load and load_all functions because of a class d
- CVE-2017-18342 CRITICAL 9.8 UPGRADE MITIGATE In PyYAML before 5.1, the yaml.load() API could execute arbitrary code if used with untrusted data
FAQ
How do I fix pyyaml vulnerabilities?
Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.
Is pyyaml being exploited right now?
None of the tracked pyyaml CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.
Which pyyaml CVE should I patch first?
CVE-2019-20477 currently ranks highest (67/100): PyYAML 5.1 through 5.1.2 has insufficient restrictions on the load and load_all functions because of a class d.