VDB

CVE-2020-26116

CVE-2020-26116 PUBLISHED

Reported by mitre · Published September 27, 2020

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.

Fixed versions

Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.

PackageEcosystemFixed in
python-debugAmazon Linux2.7.18-1.amzn2.0.4
python3-toolsAmazon Linux3.7.10-1.amzn2.0.1
pythondhi.docker.com3.9.0-beta5, 3.8.5, 3.7.9, 3.6.12, 3.5.10
python3-testAmazon Linux3.7.10-1.amzn2.0.1
python3Amazon Linux3.7.10-1.amzn2.0.1
python-libsAmazon Linux2.7.18-1.amzn2.0.4
python-minBitnami3.8.5, 3.7.9, 3.6.12, 3.5.10
libpythonBitnami3.8.5, 3.7.9, 3.6.12, 3.5.10
python3-develAmazon Linux3.7.10-1.amzn2.0.1
tkinterAmazon Linux2.7.18-1.amzn2.0.4
python-develAmazon Linux2.7.18-1.amzn2.0.4
pythonBitnami3.8.5, 3.7.9, 3.6.12, 3.5.10

14 more packages have a fixed version. See every fix in Lookup.

Affected products

VendorProductVersions
n/an/an/a
amazon:2python-debug0
amazon:2python3-tools0
amazon:2python3-test0
amazon:2python30
SiemensSIMATIC S7-1500 CPU 1518-4 PN/DP MFP3.1.0
amazon:2python-libs0
SiemensSIPLUS S7-1500 CPU 1518-4 PN/DP MFP3.1.0
amazon:2python3-devel0
amazon:2tkinter0
amazon:2python-devel0
n/an/a*
amazon:2python3-tkinter0
amazon:2python0
SiemensSIMATIC S7-1500 CPU 1518F-4 PN/DP MFP3.1.0
amazon:2python3-debug0
amazon:2python-tools0
amazon:2python3-libs0
amazon:2python-test0

Timeline

  • Sep 27, 2020 CVE Published
  • Apr 14, 2021 EPSS Score (30 in total, the first dated here)
  • Apr 3, 2025 PoC Published (2 in total, the first dated here)
  • Mar 6, 2026 Distribution Patch (15 in total, the first dated here)
  • Mar 6, 2026 Security Advisory (22 in total, the first dated here)
  • Sep 1, 2026 Coalition ESS Score

Query this with the API

The same record, from the CLI:

vulnetix vdb vuln CVE-2020-26116
vulnetix vdb fixes CVE-2020-26116

Or with curl, using the org id and key from your account page:

curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
  "https://api.vdb.vulnetix.com/v2/vuln/CVE-2020-26116/fixes/registry"

The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart

References

Look up in the Resolve Platform →
$ Lookup Community · 50/day Open Lookup ›