CVE-2017-18342

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

5.66% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 92.4% of scored records. A rank, not a probability.

NVD base score

9.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2018-06-27 12:00Z8 YR AGO

Last updated

2024-08-05 21:20Z2 YR AGO

Reserved

2018-06-27

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-502Deserialization of Untrusted DataBase
• CWE-20Improper Input ValidationClass

Data version

5.1

Document digest

63b571ec0ebb2d0e71839fe9f15da7fc69e89e4ec4c7517033ba6df6c8b9cdad

• github.comhttps://github.com/yaml/pyyaml/pull/74x_refsource_MISC
• github.comhttps://github.com/yaml/pyyaml/blob/master/CHANGESx_refsource_MISC
• lists.fedoraproject.orgFEDORA-2019-bed9afe622https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M6JCFGEIEOFMWWIXGHSELMKQDD4CV2BA/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2019-779a9db46ahttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KSQQMRUQSXBSUXLCRD3TSZYQ7SEZRKCE/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2019-44643e8bcbhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JEX7IPV5P2QJITAMA5Z63GQCZA5I6NVZ/vendor-advisoryx_refsource_FEDORA
• github.comhttps://github.com/marshmallow-code/apispec/issues/278x_refsource_MISC
• github.comhttps://github.com/yaml/pyyaml/issues/193x_refsource_MISC
• github.comhttps://github.com/yaml/pyyaml/wiki/PyYAML-yaml.load%28input%29-Deprecationx_refsource_MISC
• security.gentoo.orgGLSA-202003-45https://security.gentoo.org/glsa/202003-45vendor-advisoryx_refsource_GENTOO