CVE-2017-16876: fedoraproject fedora
Vulnerability summary
CVE-2017-16876 is a medium (CVSS 6.1) vulnerability in fedoraproject fedora. EPSS estimates a 2.23% chance of exploitation in the next 30 days, higher than 82.8% of scored vulnerabilities.
Not severe (CVSS 6.1, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 3 · Related 2Timeline
- 29-12-2017PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
6 scores · 4 sources · 4 versions- OSV · UbuntuEcosystem advisory · calculated6.1MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- OSV · DebianEcosystem advisory · calculated6.1MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS trend
Probability
2.23%
Chance of exploitation in the next 30 days
Percentile
83%
Versus all other CVEs
30-day change
No change 0.00 pp
From 2.23% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.
Debian1 product
- mistune< 0.8.1-1
Fedoraproject1 product
- fedoraEOL26
Mistune_project1 product
- mistune< 0.8.1
PyPI1 product
- mistune< 5f06d724bc05580e7f203db2d4a4905fc1127f98 | < 0.8.1
Ubuntu1 product
- mistuneAll versions (No fix recorded)
5 vendors · 5 products
References
13 links- github.com/lepture/mistune/blob/master/CHANGES.rstX Refsource CONFIRMRelease NotesThird Party AdvisoryWEB
- github.com/lepture/mistune/commit/5f06d724bc05580e7f203db2d4a4905fc1127f98X Refsource CONFIRMPatchThird Party AdvisoryWEBFIXREPORT
- bugzilla.redhat.com/show_bug.cgi?id=1524596X Refsource CONFIRMIssue TrackingThird Party AdvisoryVDB EntryWEBREPORT
- github.com/lepture/mistunePACKAGE
