XSS in Mistune Project
CVE-2017-16876
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.022 (82.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 82.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: 0.000
Affected products
- Mistune Project
- Fedoraproject Fedora — versions 26
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/lepture/mistune/blob/master/CHANGES.rst (Third Party Advisory, Release Notes)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- github.com/lepture/mistune/commit/5f06d724bc05580e7f203db2d4a4905fc1127f98 (Patch, Third Party Advisory)
- bugzilla.redhat.com/show_bug.cgi (VDB Entry, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2017-16876?
- CVE-2017-16876 is a medium-severity vulnerability in Mistune Project, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2017-12-29.
- How severe is CVE-2017-16876?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2017-16876 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.