High severityNVD Advisory· Published Apr 21, 2026· Updated Apr 21, 2026
CVE-2026-3298
CVE-2026-3298
Description
The method "sock_recvfrom_into()" of "asyncio.ProacterEventLoop" (Windows only) was missing a boundary check for the data buffer when using nbytes parameter. This allowed for an out-of-bounds buffer write if data was larger than the buffer size. Non-Windows platforms are not affected.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
12- osv-coords11 versionspkg:apk/chainguard/python-3.11pkg:apk/chainguard/python-3.12pkg:apk/chainguard/python-3.13pkg:apk/chainguard/python-3.14pkg:apk/wolfi/python-3.11pkg:apk/wolfi/python-3.12pkg:apk/wolfi/python-3.13pkg:apk/wolfi/python-3.14pkg:bitnami/libpythonpkg:bitnami/pythonpkg:bitnami/python-min
< 0+ 10 more
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: >= 3.11.0
- (no CPE)range: >= 3.11.0, < 3.14.5
- (no CPE)range: >= 3.11.0
Patches
Vulnerability mechanics
References
6- github.com/python/cpython/commit/1274766d3c29007ab77245a72abbf8dce2a9db4dnvd
- github.com/python/cpython/commit/27522b7d6e6588f03e61099dd858cd5a9314e2f2nvd
- github.com/python/cpython/commit/95633d2aad4721e25e4dfd9f43dfb6e1edcbd741nvd
- github.com/python/cpython/issues/148808nvd
- github.com/python/cpython/pull/148809nvd
- mail.python.org/archives/list/security-announce@python.org/thread/KWTPIQBOOOUNQP7UFSLBI437NJDFLA3F/nvd
News mentions
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