CVE-2026-63374
python-anyio: TLSStream IDNA 2003 host name encoding enables potential TLS certificate spoofing (bsc#1281476).
CVE-2026-63374 is fixed in python-anyio on 1 platform, first by SUSE-SU-2026:4416-1, released October 2, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
n/a
No vendor severity
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0029
21st percentile
TLSStream IDNA 2003 host name encoding enables potential TLS certificate spoofing (bsc#1281476).
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| python-anyio · Debian 14 | 4.15.1-1 | DEBIAN-CVE-2026-63374 | Oct 6, 2026 |
| python-anyio · opensuse-leap 16.0 | 4.8.0-160000.3.1 | OPENSUSE-SU-2026:22060-1 | Nov 7, 2026 |
| python-anyio · sles 15.6 | 4.1.0-150400.9.11.1 | SUSE-SU-2026:4416-1 | Oct 2, 2026 |
| python-anyio · sles 15.7 | 4.1.0-150400.9.11.1 | SUSE-SU-2026:4416-1 | Oct 2, 2026 |
| python-anyio · sles 16.0 | 4.8.0-160000.3.1 | SUSE-SU-2026:24208-1 | Nov 7, 2026 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.