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CVE-2021-33038

HIGH
7.5
CVSS Score
Published: May 26, 2021 at 01:51 PM UTC
Updated: June 17, 2026 at 03:54 AM UTC
2 products affected across 2 vendorsDebian LinuxHyperkitty

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Severity
HIGH7.5
Exploit prediction
EPSS 2%

Description

An issue was discovered in management/commands/hyperkitty_import.py in HyperKitty through 1.3.4. When importing a private mailing list's archives, these archives are publicly visible for the duration of the import. For example, sensitive information might be available on the web for an hour during a large migration from Mailman 2 to Mailman 3.

Affected

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

References (4)

x_refsource_CONFIRMPatchThird Party Advisory
Source: [email protected]
https://gitlab.com/mailman/hyperkitty/-/commit/9025324597d60b2dff740e49b70b15589d6804fa
x_refsource_CONFIRMExploitIssue TrackingPatchThird Party Advisory
Source: [email protected]
https://gitlab.com/mailman/hyperkitty/-/issues/380
x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://techblog.wikimedia.org/2021/06/11/discovering-and-fixing-cve-2021-33038-in-mailman3/
Vendor Advisoryx_refsource_DEBIANThird Party Advisory
Source: [email protected]
https://www.debian.org/security/2021/dsa-4922

CVSS

7.5HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-276

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