6.5

CVE-2020-26137: canonical ubuntu_linux

Modified
AliasesALPINE-CVE-2020-26137MGASA-2021-0055SUSE-SU-2020:3723-1
Published 29-09-2020Last modified 04-08-2024

Vulnerability summary

CVE-2020-26137 is a medium (CVSS 6.5) vulnerability in canonical ubuntu_linux. EPSS estimates a 2.27% chance of exploitation in the next 30 days, higher than 83% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 6.5, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
6.5/10
010
Medium · v3.1 (NVD)
EPSS score
2.27%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 13 · Related 5
DLA-2686-1DLA-3610-1MGASA-2021-0054OPENSUSE-SU-2026:12044-1OPENSUSE-SU-2026:12045-1RHSA-2020:4299

Timeline

  1. 29-09-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

urllib3 before 1.25.9 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 putrequest(). NOTE: this is similar to CVE-2020-26116.

CVSS metrics

9 scores · 7 sources · 3 versions

EPSS trend

Probability

2.27%

Chance of exploitation in the next 30 days

Percentile

83%

Versus all other CVEs

30-day change

No change 0.00 pp

From 2.27% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Suse118 products
  • aws-cli&distro=SUSE Linux Enterprise Module for Public Cloud 15 SP1< 1.19.9-26.1
  • aws-cli&distro=SUSE Linux Enterprise Module for Public Cloud 15 SP2< 1.19.9-26.1
  • aws-cli&distro=SUSE Linux Enterprise Module for Public Cloud 15 SP3< 1.19.9-26.1
  • python-asn1crypto&distro=SUSE Enterprise Storage 6< 0.24.0-3.2.1
  • python-asn1crypto&distro=SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS< 0.24.0-3.2.1
Opensuse17 products
  • aws-cli&distro=openSUSE Leap 15.3< 1.19.9-26.1
  • python-asn1crypto&distro=openSUSE Leap 15.3< 0.24.0-3.2.1
  • python-boto3&distro=openSUSE Leap 15.3< 1.17.9-19.1
  • python-botocore&distro=openSUSE Leap 15.3< 1.20.9-33.1
  • python-cffi&distro=openSUSE Leap 15.2< 1.13.2-lp152.2.3.1
Debian2 products
Oracle2 products
Redhat2 products
  • python-urllib3< 0:1.24.2-5.el8
  • python3-urllib3< 0:1.24.2-5.el8
Ubuntu2 products
  • python-pipAll versions (No fix recorded) | < 8.1.1-2ubuntu0.6 | < 9.0.1-2.3~ubuntu1.18.04.3 | < 20.0.2-5ubuntu1.1
  • python-urllib3< 1.13.1-2ubuntu0.16.04.4 | < 1.22-1ubuntu0.18.04.2 | < 1.25.8-2ubuntu0.1
Alpine1 product
  • py3-urllib3< 1.25.9-r0
Canonical1 product
Chainguard1 product
  • py3.13-scanner-test-scanner-test-python-vulnerability-unfixedAll versions (No fix recorded)
Mageia1 product
  • python-urllib3< 1.24.3-1.2.mga7
PyPI1 product
  • urllib3< 1dd69c5c5982fae7c87a620d487c2ebf7a6b436b | < 1.25.9
Python1 product

12 vendors · 149 products

References

41 links
Show all 41 references