CVE-2019-16056

HIGH
7.5
CVSS Score
Published: September 6, 2019 at 05:24 PM UTC
Updated: October 14, 2026 at 07:16 AM UTC
10 products affected across 7 vendorsDebian LinuxFedoraUbuntu Linux

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Severity
HIGH7.5
Exploit prediction
EPSS 5%
SSVC
No known exploit

Description

An issue was discovered in Python through 2.7.16, 3.x through 3.5.7, 3.6.x through 3.6.9, and 3.7.x through 3.7.4. The email module wrongly parses email addresses that contain multiple @ characters. An application that uses the email module and implements some kind of checks on the From/To headers of a message could be tricked into accepting an email address that should be denied. An attack may be the same as in CVE-2019-11340; however, this CVE applies to Python more generally.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 2.7.163.0.0 ≤ v ≤ 3.0.13.1.0 ≤ v ≤ 3.1.53.2.0 ≤ v ≤ 3.2.63.3.0 ≤ v ≤ 3.3.73.4.0 ≤ v ≤ 3.4.103.5.0 ≤ v ≤ 3.5.73.6.0 ≤ v ≤ 3.6.93.7.0 ≤ v ≤ 3.7.4

References (35)

Vendor Advisoryx_refsource_REDHATThird Party Advisory
https://access.redhat.com/errata/RHSA-2019:3725
Vendor Advisoryx_refsource_REDHATThird Party Advisory
https://access.redhat.com/errata/RHSA-2019:3948
x_refsource_MISCIssue TrackingVendor Advisory
https://bugs.python.org/issue34155

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfoCWE-20

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