DEBIAN-CVE-2020-26116

Advisory lineage Upstream: 1 Downstream: 2
Upstream
CVE-2020-26116
Published: 27 Sept 2020, 04:15
Last modified:28 Apr 2026, 20:19

Vulnerability Summary

Overall Risk (default)
medium
29/100
CVSS Score
7.2 HIGH
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

27 Sept 2020, 04:15
Published
Vulnerability first disclosed
28 Apr 2026, 20:19
Last Modified
Vulnerability information updated

Description

http.client in Python 3.x before 3.5.10, 3.6.x before 3.6.12, 3.7.x before 3.7.9, and 3.8.x before 3.8.5 allows CRLF injection if the attacker controls the HTTP request method, as demonstrated by inserting CR and LF control characters in the first argument of HTTPConnection.request.

CVSS Metrics

  • v3.1•HIGH•Score: 7.2CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Affected Systems

  • debian•pypy3

    < 7.3.3+dfsg-1 | < 7.3.3+dfsg-1 | < 7.3.3+dfsg-1 | < 7.3.3+dfsg-1

  • debian•python2.7

    all

  • debian•python3.9

    < 3.9.0~b5-1

References (1)