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CVE-2017-15612

Cross-site Scripting in Mistune

6.1 MediumFix available

mistune.py in Mistune 0.7.4 allows XSS via an unexpected newline (such as in java\nscript:) or a crafted email address, related to the escape and autolink functions.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
Low
Integrity
Low
Availability
None

Exploit likelihood

0.93%Up 0.5 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 6.1

mistune.py in Mistune 0.7.4 allows XSS via an unexpected newline (such as in java\nscript:) or a crafted email address, related to the escape and autolink functions.

Record
CVE-2017-15612
CVSS 3.0
6.1 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS 2.0
4.3 MediumAV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness
CWE-79
Updated
2026-11-02
CVE List No score

mistune.py in Mistune 0.7.4 allows XSS via an unexpected newline (such as in java\nscript:) or a crafted email address, related to the escape and autolink functions.

Record
CVE-2017-15612
Updated
2026-11-02
EUVDEUVD-2017-0075 No score

mistune.py in Mistune 0.7.4 allows XSS via an unexpected newline (such as in java\nscript:) or a crafted email address, related to the escape and autolink functions.

Record
EUVD-2017-0075
Updated
2026-11-03
GitHub AdvisoriesGHSA-hpv5-v8g5-c864 6.1

Cross-site Scripting in Mistune

mistune.py in Mistune 0.7.4 allows XSS via an unexpected newline (such as in java\nscript:) or a crafted email address, related to the escape and autolink functions.

Record
GHSA-hpv5-v8g5-c864
CVSS 3.0
6.1 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
OSV 6.1

mistune.py in Mistune 0.7.4 allows XSS via an unexpected newline (such as in java\nscript:) or a crafted email address, related to the escape and autolink functions.

Record
CVE-2017-15612
CVSS 3.0
6.1 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Updated
2026-11-02
OSVDEBIAN-CVE-2017-15612 6.1

mistune.py in Mistune 0.7.4 allows XSS via an unexpected newline (such as in java\nscript:) or a crafted email address, related to the escape and autolink functions.

Record
DEBIAN-CVE-2017-15612
CVSS 3.0
6.1 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Updated
2026-11-02
Show 8 moreShow less
OSVGHSA-hpv5-v8g5-c864 6.1

Cross-site Scripting in Mistune

mistune.py in Mistune 0.7.4 allows XSS via an unexpected newline (such as in java\nscript:) or a crafted email address, related to the escape and autolink functions.

Record
GHSA-hpv5-v8g5-c864
CVSS 3.0
6.1 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
OSVUBUNTU-CVE-2017-15612 6.1

mistune.py in Mistune 0.7.4 allows XSS via an unexpected newline (such as in java\nscript:) or a crafted email address, related to the escape and autolink functions.

Record
UBUNTU-CVE-2017-15612
CVSS 3.0
6.1 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Updated
2026-11-02
OSVMGASA-2018-0066 No score

Updated python-mistune packages fix security vulnerabilities

mistune.py in Mistune 0.7.4 allows XSS via an unexpected newline (such as in java\nscript:) or a crafted email address, related to the escape and autolink functions (CVE-2017-15612).

A cross-site-scripting vulnerability was found in python-mistune (CVE-2017-16876).

Record
MGASA-2018-0066
Updated
2026-11-02
OSVopenSUSE-SU-2024:11239-1 No score

python36-mistune-0.8.4-3.5 on GA media

These are all security issues fixed in the python36-mistune-0.8.4-3.5 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:11239-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:13453-1 No score

python310-mistune2-2.0.5-1.1 on GA media

These are all security issues fixed in the python310-mistune2-2.0.5-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:13453-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:14148-1 No score

python310-mistune-3.0.2-2.5 on GA media

These are all security issues fixed in the python310-mistune-3.0.2-2.5 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:14148-1
Updated
2026-11-02
OSVopenSUSE-SU-2026:11585-1 No score

python313-mistune-3.3.4-1.1 on GA media

These are all security issues fixed in the python313-mistune-3.3.4-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2026:11585-1
Updated
2026-11-02
OSVPYSEC-2017-80 No score

mistune.py in Mistune 0.7.4 allows XSS via an unexpected newline (such as in java\nscript:) or a crafted email address, related to the escape and autolink functions.

Record
PYSEC-2017-80
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
mistune
PyPI
 before 0.8
0.8
mistune
Debian:12
 before 0.8-1
0.8-1
mistune
Debian:13
 before 0.8-1
0.8-1
mistune
Debian:14
 before 0.8-1
0.8-1
mistune
PyPI
 before 0.8, plus listed versions
0.1.00.2.00.3.00.3.10.4
Show 9 moreShow less
0.4.10.50.5.10.60.70.7.10.7.20.7.30.7.4
0.8
python-mistune
Mageia:6
From an advisory covering 2 CVEs
 before 0.7.2-1.1.mga6
0.7.2-1.1.mga6
mistune
Ubuntu:16.04:LTS
 All versions, plus listed versions
0.6-20.7.1-1
 None known
python-mistune
openSUSE:Tumbleweed
From an advisory covering 2 CVEs
 before 3.0.2-2.5
3.0.2-2.5
python-mistune
openSUSE:Tumbleweed
From an advisory covering 2 CVEs
 before 3.3.4-1.1
3.3.4-1.1

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2017-15612 is a medium vulnerability (CVSS 6.1) in Mistune Project Mistune, published October 19, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.93%, the 60th percentile. Fixed in mistune 0.8.

References

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