Upstream information
Description
Flask is a web server gateway interface (WSGI) web application framework. In Flask 3.1.0, the way fallback key configuration was handled resulted in the last fallback key being used for signing, rather than the current signing key. Signing is provided by the `itsdangerous` library. A list of keys can be passed, and it expects the last (top) key in the list to be the most recent key, and uses that for signing. Flask was incorrectly constructing that list in reverse, passing the signing key first. Sites that have opted-in to use key rotation by setting `SECRET_KEY_FALLBACKS` care likely to unexpectedly be signing their sessions with stale keys, and their transition to fresher keys will be impeded. Sessions are still signed, so this would not cause any sort of data integrity loss. Version 3.1.1 contains a patch for the issue.SUSE information
Overall state of this security issue: Resolved
This issue is currently rated as having low severity.
| SUSE | |
|---|---|
| Base Score | 1.9 |
| Vector | CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L |
| Attack Vector | Local |
| Attack Complexity | High |
| Privileges Required | High |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality Impact | None |
| Integrity Impact | None |
| Availability Impact | Low |
| CVSSv3 Version | 3.1 |
| CNA (GitHub) | SUSE | |
|---|---|---|
| Base Score | 1.8 | 1.8 |
| Vector | CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| Attack Vector | Local | Local |
| Attack Complexity | Low | Low |
| Attack Requirements | Present | Present |
| Privileges Required | High | High |
| User Interaction | None | None |
| Vulnerable System Confidentiality Impact | None | None |
| Vulnerable System Integrity Impact | None | None |
| Vulnerable System Availability Impact | Low | Low |
| Subsequent System Confidentiality Impact | None | None |
| Subsequent System Integrity Impact | None | None |
| Subsequent System Availability Impact | None | None |
| CVSSv4 Version | 4.0 | 4.0 |
SUSE Security Advisories:
- openSUSE-SU-2025:15152-1, published Sat May 24 18:49:44 2025
List of released packages
| Product(s) | Fixed package version(s) | References |
|---|---|---|
| openSUSE Tumbleweed |
| Patchnames: openSUSE-Tumbleweed-2025-15152 |
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 under general support and receiving all security fixes. | ||
| SUSE Linux Enterprise Desktop 15 SP6 | python-Flask | Not affected |
| SUSE Linux Enterprise Desktop 15 SP7 | python-Flask | Not affected |
| SUSE Linux Enterprise High Performance Computing 12 | python-Flask | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP6 | python-Flask | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP7 | python-Flask | Not affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP5 | python-Flask | Not affected |
| SUSE Linux Enterprise Module for Python 3 15 SP6 | python-Flask | Not affected |
| SUSE Linux Enterprise Module for Python 3 15 SP7 | python-Flask | Not affected |
| SUSE Linux Enterprise Server 15 SP6 | python-Flask | Not affected |
| SUSE Linux Enterprise Server 15 SP7 | python-Flask | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | python-Flask | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | python-Flask | Not affected |
| SUSE Manager Proxy 4.3 | python-Flask | Not affected |
| SUSE Manager Retail Branch Server 4.3 | python-Flask | Not affected |
| SUSE Manager Server 4.3 | python-Flask | Not affected |
| openSUSE Leap 15.6 | python-Flask | Not affected |
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SUSE Linux Enterprise High Performance Computing 15 SP3 | python-Flask | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS | python-Flask | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | python-Flask | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4 | python-Flask | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | python-Flask | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5 | python-Flask | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | python-Flask | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | python-Flask | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP3 | python-Flask | Not affected |
| SUSE Linux Enterprise Module for Public Cloud 12 | python-Flask | Not affected |
| SUSE Linux Enterprise Module for Python 3 15 SP4 | python-Flask | Not affected |
| SUSE Linux Enterprise Module for Python 3 15 SP5 | python-Flask | Not affected |
| SUSE Linux Enterprise Server 12 SP5 | python-Flask | Not affected |
| SUSE Linux Enterprise Server 15 SP3 | python-Flask | Not affected |
| SUSE Linux Enterprise Server 15 SP3-LTSS | python-Flask | Not affected |
| SUSE Linux Enterprise Server 15 SP4 | python-Flask | Not affected |
| SUSE Linux Enterprise Server 15 SP4-LTSS | python-Flask | Not affected |
| SUSE Linux Enterprise Server 15 SP5 | python-Flask | Not affected |
| SUSE Linux Enterprise Server 15 SP5-LTSS | python-Flask | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP5 | python-Flask | Not affected |
| Products past their end of life and not receiving proactive updates anymore. | ||
| SUSE CaaS Platform 4.0 | python-Flask | Not affected |
| SUSE Enterprise Storage 6 | python-Flask | Not affected |
| SUSE Enterprise Storage 7 | python-Flask | Not affected |
| SUSE Enterprise Storage 7.1 | python-Flask | Not affected |
| SUSE Linux Enterprise Desktop 15 | python-Flask | Not affected |
| SUSE Linux Enterprise Desktop 15 SP1 | python-Flask | Not affected |
| SUSE Linux Enterprise Desktop 15 SP2 | python-Flask | Not affected |
| SUSE Linux Enterprise Desktop 15 SP3 | python-Flask | Not affected |
| SUSE Linux Enterprise Desktop 15 SP4 | python-Flask | Not affected |
| SUSE Linux Enterprise Desktop 15 SP5 | python-Flask | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 | python-Flask | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1 | python-Flask | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS | python-Flask | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS | python-Flask | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2 | python-Flask | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS | python-Flask | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | python-Flask | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | python-Flask | Not affected |
| SUSE Linux Enterprise High Performance Computing 15-ESPOS | python-Flask | Not affected |
| SUSE Linux Enterprise High Performance Computing 15-LTSS | python-Flask | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 | python-Flask | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP1 | python-Flask | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP2 | python-Flask | Not affected |
| SUSE Linux Enterprise Module for Package Hub 15 | python-Flask | Not affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP1 | python-Flask | Not affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP2 | python-Flask | Not affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP3 | python-Flask | Not affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP4 | python-Flask | Not affected |
| SUSE Linux Enterprise Real Time 15 SP2 | python-Flask | Not affected |
| SUSE Linux Enterprise Real Time 15 SP3 | python-Flask | Not affected |
| SUSE Linux Enterprise Server 12 | python-Flask | Not affected |
| SUSE Linux Enterprise Server 12 SP3 | python-Flask | Not affected |
| SUSE Linux Enterprise Server 12 SP4 | python-Flask | Not affected |
| SUSE Linux Enterprise Server 15 | python-Flask | Not affected |
| SUSE Linux Enterprise Server 15 SP1 | python-Flask | Not affected |
| SUSE Linux Enterprise Server 15 SP1-BCL | python-Flask | Not affected |
| SUSE Linux Enterprise Server 15 SP1-LTSS | python-Flask | Not affected |
| SUSE Linux Enterprise Server 15 SP2 | python-Flask | Not affected |
| SUSE Linux Enterprise Server 15 SP2-BCL | python-Flask | Not affected |
| SUSE Linux Enterprise Server 15 SP2-LTSS | python-Flask | Not affected |
| SUSE Linux Enterprise Server 15 SP3-BCL | python-Flask | Not affected |
| SUSE Linux Enterprise Server 15-LTSS | python-Flask | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 12 | python-Flask | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP3 | python-Flask | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP4 | python-Flask | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 | python-Flask | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP1 | python-Flask | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP2 | python-Flask | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP3 | python-Flask | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | python-Flask | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | python-Flask | Not affected |
| SUSE Manager Proxy 4.0 | python-Flask | Not affected |
| SUSE Manager Proxy 4.1 | python-Flask | Not affected |
| SUSE Manager Proxy 4.2 | python-Flask | Not affected |
| SUSE Manager Retail Branch Server 4.0 | python-Flask | Not affected |
| SUSE Manager Retail Branch Server 4.1 | python-Flask | Not affected |
| SUSE Manager Retail Branch Server 4.2 | python-Flask | Not affected |
| SUSE Manager Server 4.0 | python-Flask | Not affected |
| SUSE Manager Server 4.1 | python-Flask | Not affected |
| SUSE Manager Server 4.2 | python-Flask | Not affected |
| openSUSE Leap 15.3 | python-Flask | Not affected |
| openSUSE Leap 15.4 | python-Flask | Not affected |
| openSUSE Leap 15.5 | python-Flask | Not affected |
SUSE Timeline for this CVE
CVE page created: Tue May 13 20:00:51 2025CVE page last modified: Sun Jun 22 17:24:36 2025