Upstream information

CVE-2026-34531 at MITRE

Description

Flask-HTTPAuth provides Basic, Digest and Token HTTP authentication for Flask routes. Prior to version 4.8.1, in a situation where the client makes a request to a token protected resource without passing a token, or passing an empty token, Flask-HTTPAuth would invoke the application's token verification callback function with the token argument set to an empty string. If the application had any users in its database with an empty string set as their token, then it could potentially authenticate the client request against any of those users. This issue has been patched in version 4.8.1.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having important severity.

CVSS v3 Scores
CVSS detail CNA (GitHub) National Vulnerability Database
Base Score 6.5 8.2
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
Attack Vector Network Network
Attack Complexity High Low
Privileges Required None None
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact Low Low
Integrity Impact High High
Availability Impact None None
CVSSv3 Version 3.1 3.1
SUSE Bugzilla entry: 1261355 [IN_PROGRESS]

No SUSE Security Announcements cross referenced.

List of released packages

Product(s) Fixed package version(s) References
SUSE Package Hub 15 SP6
  • python311-Flask-HTTPAuth >= 4.8.0-bp156.2.3.1
 Patchnames:
openSUSE-2026-121
openSUSE Leap 15.6
  • python311-Flask-HTTPAuth >= 4.8.0-bp156.2.3.1
 Patchnames:
openSUSE-2026-121
openSUSE Leap 16.0
  • python313-Flask-HTTPAuth >= 4.8.0-bp160.2.1
 Patchnames:
openSUSE-Leap-16.0-packagehub-194
openSUSE Tumbleweed
  • python311-Flask-HTTPAuth >= 4.8.1-1.1
  • python313-Flask-HTTPAuth >= 4.8.1-1.1
  • python314-Flask-HTTPAuth >= 4.8.1-1.1
 Patchnames:
openSUSE-Tumbleweed-2026-10518

Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s) Source package State
Products past their end of life and not receiving proactive updates anymore.
SUSE Package Hub 15 SP6 python-Flask-HTTPAuth Released

SUSE Timeline for this CVE

CVE page created: Thu Apr 2 00:08:58 2026
CVE page last modified: Tue Apr 21 18:57:55 2026