GHSA-6m57-q338-h677

GHSA-6m57-q338-h677 PUBLISHED CVSS 6.5 MEDIUM

Record from GitHub Advisory Database · Published May 14, 2022

The smtplib library in CPython (aka Python) before 2.7.12, 3.x before 3.4.5, and 3.5.x before 3.5.2 does not return an error when StartTLS fails, which might allow man-in-the-middle attackers to bypass the TLS protections by leveraging a network position between the client and the registry to block the StartTLS command, aka a "StartTLS stripping attack."

Risk scores

CVSS 3.0

6.5

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N

Timeline

May 14, 2022 CVE Published
Apr 29, 2026 Security Advisory

Query this with the API

The same record, from the CLI:

vulnetix vdb vuln GHSA-6m57-q338-h677
vulnetix vdb fixes GHSA-6m57-q338-h677

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/GHSA-6m57-q338-h677/fixes/registry"

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References

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