CVE-2015-20107
CVSS v3
7.6
HIGH
EPSS Score
7.1 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
In Python (aka CPython) up to 3.10.8, the mailcap module does not add escape characters into commands discovered in the system mailcap file. This may allow attackers to inject shell commands into applications that call mailcap.findmatch with untrusted input (if they lack validation of user-provided filenames or arguments). The fix is also back-ported to 3.7, 3.8, 3.9
Technical details
- Published
- 2022-04-13
Frequently asked questions
What is CVE-2015-20107?
In Python (aka CPython) up to 3.10.8, the mailcap module does not add escape characters into commands discovered in the system mailcap file. This may allow attackers to inject shell commands into applications that call mailcap.findmatch with untrusted input (if they lack validation of user-provided filenames or arguments). The fix is also back-ported to 3.7, 3.8, 3.9
Is CVE-2015-20107 actively exploited?
Active exploitation of CVE-2015-20107 has not been confirmed. Its EPSS score was 7.1% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2015-20107?
CVE-2015-20107 has a CVSS v3 base score of 7.6 (HIGH severity).
Is CVE-2015-20107 affecting your environment?
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