What is CVE-2026-49265?

CVE-2026-49265 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. OAuthLib: Timing Attack Vulnerability in PKCE code_verifier Comparison

Which CVE IDs does CVE-2026-49265 cover?

CVE-2026-49265 covers the following CVE IDs: CVE-2026-49265. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-49265?

CVE-2026-49265 has a CVSS v3 base score of 6.8, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-49265?

CVE-2026-49265 affects 2 products, including: azl3 python-oauthlib 3.2.2-3 on Azure Linux 3.0; azl3 python-oauthlib 3.2.2-4 on Azure Linux 3.0.

CVE-2026-49265MediumCVSS 6.8

OAuthLib: Timing Attack Vulnerability in PKCE code_verifier Comparison

Vendor

Microsoft Security Response Center (MSRC)

Published

October 15, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-49265 →

🎯 Affected products2

azl3 python-oauthlib 3.2.2-3 on Azure Linux 3.0
azl3 python-oauthlib 3.2.2-4 on Azure Linux 3.0

✅ Remediation

KBRelease Notes (Security Update) — fixed build 3.2.2-4

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49265
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade