Vulnerability Monitor

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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.

Published

2017-12-29T15:29:00.610

Last Modified

2025-04-20T01:37:25.860

Status

Deferred

Source

[email protected]

Severity

CVSSv3.0: 6.1 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:N/I:P/A:N

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: PARTIAL
Availability Impact: NONE

Exploitability Score

8.6

Impact Score

2.9

Weaknesses

Type: Primary
CWE-79

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	mistune_project	mistune	< 0.8.1	Yes
Operating System	fedoraproject	fedora	26	Yes

References

https://bugzilla.redhat.com/show_bug.cgi?id=1524596 Issue Tracking, Third Party Advisory, VDB Entry ([email protected])
https://github.com/lepture/mistune/blob/master/CHANGES.rst Release Notes, Third Party Advisory ([email protected])
https://github.com/lepture/mistune/commit/5f06d724bc05580e7f203db2d4a4905fc1127f98 Patch, Third Party Advisory ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NUR3GMHQBMA3UC4PFMCK6GCLOQC4LQQC/ ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=1524596 Issue Tracking, Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/lepture/mistune/blob/master/CHANGES.rst Release Notes, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/lepture/mistune/commit/5f06d724bc05580e7f203db2d4a4905fc1127f98 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NUR3GMHQBMA3UC4PFMCK6GCLOQC4LQQC/ (af854a3a-2127-422b-91ae-364da2661108)