Medium severityNVD Advisory· Published Apr 10, 2026· Updated Jun 17, 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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
21(expand)+ 1 more
- (no CPE)
- (no CPE)
- osv-coords19 versionspkg:bitnami/libpythonpkg:bitnami/pythonpkg:bitnami/python-minpkg:rpm/opensuse/python3&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/python310&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/python311&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/python312&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/python313&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/python313&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/python313-core&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/python313-documentation&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/python313-nogil&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/python313-nogil-nogil-core&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/python314&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/python315&distro=openSUSE%20Tumbleweedpkg:rpm/suse/python&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP7pkg:rpm/suse/python-base&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP7pkg:rpm/suse/python313&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Python%203%2015%20SP7pkg:rpm/suse/python313-core&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Python%203%2015%20SP7
< 3.13.13+ 18 more
- (no CPE)range: < 3.13.13
- (no CPE)range: < 3.13.13
- (no CPE)range: < 3.13.13
- (no CPE)range: < 3.13.14-160000.1.1
- (no CPE)range: < 3.10.20-5.1
- (no CPE)range: < 3.11.15-6.1
- (no CPE)range: < 3.12.13-6.1
- (no CPE)range: < 3.13.14-160000.1.1
- (no CPE)range: < 3.13.13-2.1
- (no CPE)range: < 3.13.14-160000.1.1
- (no CPE)range: < 3.13.14-160000.1.1
- (no CPE)range: < 3.13.14-160000.1.1
- (no CPE)range: < 3.13.14-160000.1.1
- (no CPE)range: < 3.14.6-1.1
- (no CPE)range: < 3.15.0~a8-2.1
- (no CPE)range: < 2.7.18-150000.117.1
- (no CPE)range: < 2.7.18-150000.117.1
- (no CPE)range: < 3.13.13-150700.4.50.1
- (no CPE)range: < 3.13.13-150700.4.50.1
Patches
Vulnerability mechanics
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/[email protected]/thread/F5ZT5ICGJ6CKXVUJ34YBVY7WOZ5SHG53/nvd
News mentions
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