CVE-2017-16876: XSS
First published: Fri Dec 29 2017(Updated: )
Cross-site scripting (XSS) vulnerability in the _keyify function in mistune.py in Mistune before 0.8.1 allows remote attackers to inject arbitrary web script or HTML by leveraging failure to escape the "key" argument.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| pip/mistune | <0.8.1 | 0.8.1 |
| mistune | <0.8.1 | |
| Fedora | =26 |
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Reference Links
- https://nvd.nist.gov/vuln/detail/CVE-2017-16876
- https://github.com/lepture/mistune/commit/5f06d724bc05580e7f203db2d4a4905fc1127f98
- https://bugzilla.redhat.com/show_bug.cgi?id=1524596
- https://github.com/advisories/GHSA-98gj-wwxm-cj3h (Advisory)
- https://github.com/lepture/mistune/blob/master/CHANGES.rst
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NUR3GMHQBMA3UC4PFMCK6GCLOQC4LQQC/
- https://github.com/pypa/advisory-database/tree/main/vulns/mistune/PYSEC-2017-18.yaml
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NUR3GMHQBMA3UC4PFMCK6GCLOQC4LQQC
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NUR3GMHQBMA3UC4PFMCK6GCLOQC4LQQC/
Frequently Asked Questions
What is the severity of CVE-2017-16876?
CVE-2017-16876 is categorized as a medium severity cross-site scripting (XSS) vulnerability.
How do I fix CVE-2017-16876?
To fix CVE-2017-16876, upgrade to Mistune version 0.8.1 or later.
What kind of attacks can CVE-2017-16876 enable?
CVE-2017-16876 can enable remote attackers to inject arbitrary web scripts or HTML into affected applications.
Which versions of Mistune are affected by CVE-2017-16876?
Mistune versions prior to 0.8.1 are affected by CVE-2017-16876.
What is the context of the XSS vulnerability in CVE-2017-16876?
CVE-2017-16876 arises from a failure to properly escape the 'key' argument in the _keyify function in mistune.py.
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