Upstream information
Description
Authlib is a Python library which builds OAuth and OpenID Connect servers. From version 1.6.5 to before version 1.6.7, previous tests involving passing a malicious JWT containing alg: none and an empty signature was passing the signature verification step without any changes to the application code when a failure was expected.. This issue has been patched in version 1.6.7.SUSE information
Overall state of this security issue: Resolved
This issue is currently rated as having moderate severity.
| CVSS detail | CNA (GitHub) |
|---|---|
| Base Score | 7.7 |
| Vector | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:P/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 | Network |
| Attack Complexity | Low |
| Attack Requirements | None |
| Privileges Required | None |
| User Interaction | None |
| Vulnerable System Confidentiality Impact | None |
| Vulnerable System Integrity Impact | High |
| Vulnerable System Availability Impact | None |
| Subsequent System Confidentiality Impact | None |
| Subsequent System Integrity Impact | None |
| Subsequent System Availability Impact | None |
| CVSSv4 Version | 4.0 |
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Please note that this evaluation state might be work in progress, incomplete or outdated.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 SP7 | python-Authlib | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP7 | python-Authlib | Not affected |
| SUSE Linux Enterprise Module for Python 3 15 SP7 | python-Authlib | Not affected |
| SUSE Linux Enterprise Server 15 SP7 | python-Authlib | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | python-Authlib | Not affected |
| openSUSE Leap 15.6 | python-Authlib | Not affected |
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SUSE Linux Enterprise Server 15 SP6-LTSS | python-Authlib | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | python-Authlib | Not affected |
| Products past their end of life and not receiving proactive updates anymore. | ||
| SUSE Linux Enterprise Desktop 15 SP6 | python-Authlib | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP6 | python-Authlib | Not affected |
| SUSE Linux Enterprise Module for Python 3 15 SP6 | python-Authlib | Not affected |
| SUSE Linux Enterprise Server 15 SP6 | python-Authlib | Not affected |
SUSE Timeline for this CVE
CVE page created: Fri Mar 6 10:00:11 2026CVE page last modified: Fri Mar 6 14:48:30 2026