CVE-2026-49265

OAuthLib: Timing Attack Vulnerability in PKCE code_verifier Comparison

CVE-2026-49265 is fixed in python-oauthlib on 1 platform, first by SUSE-SU-2026:4810-1, released November 7, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine

CVSS

6.8

Moderate

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0024

15th percentile

Oauthlib: Timing Attack Vulnerability in PKCE code_verifier Comparison (bsc#1283527).

Where it's fixed

Product	Fixed in	Fix	Released
Linux
python-oauthlib · opensuse-leap 16.0	3.2.2-160000.3.1	OPENSUSE-SU-2026:22103-1	Nov 7, 2026
python-oauthlib · sles 15.7	3.2.2-150400.12.10.1	SUSE-SU-2026:4810-1	Nov 7, 2026
python-oauthlib · sles 16.0	3.2.2-160000.3.1	SUSE-SU-2026:24246-1	Nov 7, 2026

Details

Published
October 14, 2026
Weakness
Observable Timing Discrepancy
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49265

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