Medium severityNVD Advisory· Published Apr 10, 2026· Updated Apr 13, 2026
CVE-2026-3446
CVE-2026-3446
Description
When calling base64.b64decode() or related functions the decoding process would stop after encountering the first padded quad regardless of whether there was more information to be processed. This can lead to data being accepted which may be processed differently by other implementations. Use "validate=True" to enable stricter processing of base64 data.
Affected products
1Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
6- github.com/python/cpython/commit/1f9958f909c1b41a4ffc0b613ef8ec8fa5e7c474nvd
- github.com/python/cpython/commit/4561f6418a691b3e89aef0901f53fe0dfb7f7c0envd
- github.com/python/cpython/commit/e31c55121620189a0d1a07b689762d8ca9c1b7fanvd
- github.com/python/cpython/issues/145264nvd
- github.com/python/cpython/pull/145267nvd
- mail.python.org/archives/list/security-announce@python.org/thread/F5ZT5ICGJ6CKXVUJ34YBVY7WOZ5SHG53/nvd
News mentions
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