Medium severity5.5NVD Advisory· Published Jun 23, 2026· Updated Aug 18, 2026
CVE-2026-0864
CVE-2026-0864
Description
When using the "configparser" module to write configuration files containing multi-line text values with carriage return characters (\r) the resulting file could be injected with unexpected keys and values if the attacker controls the written value.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
36- osv-coords23 versionspkg:apk/wolfi/python-3.13pkg:rpm/opensuse/python310&distro=openSUSE%20Tumbleweedpkg:apk/chainguard/python-3.14pkg:apk/chainguard/python-3.11pkg:apk/wolfi/python-3.10pkg:rpm/opensuse/python313-documentation&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/python311&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/python313-nogil-nogil-core&distro=openSUSE%20Leap%2016.0pkg:apk/chainguard/python-3.10pkg:rpm/opensuse/python313-nogil&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/python315&distro=openSUSE%20Tumbleweedpkg:bitnami/python-minpkg:bitnami/pythonpkg:rpm/opensuse/python313-core&distro=openSUSE%20Leap%2016.0pkg:apk/chainguard/python-3.13pkg:apk/wolfi/python-3.12pkg:apk/chainguard/python-3.12pkg:rpm/opensuse/python312&distro=openSUSE%20Tumbleweedpkg:apk/wolfi/python-3.14pkg:apk/wolfi/python-3.11pkg:bitnami/libpythonpkg:rpm/opensuse/python313&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/python313&distro=openSUSE%20Leap%2016.0
< 3.13.14-r2+ 22 more
- (no CPE)range: < 3.13.14-r2
- (no CPE)range: < 3.10.20-8.1
- (no CPE)range: < 3.14.6-r3
- (no CPE)range: < 3.11.15-r8
- (no CPE)range: < 3.10.20-r10
- (no CPE)range: < 3.13.14-160000.2.1
- (no CPE)range: < 3.11.15-8.1
- (no CPE)range: < 3.13.14-160000.2.1
- (no CPE)range: < 3.10.20-r10
- (no CPE)range: < 3.13.14-160000.2.1
- (no CPE)range: < 3.15.0~b4-1.1
- (no CPE)range: < 3.10.21
- (no CPE)range: < 3.10.21
- (no CPE)range: < 3.13.14-160000.2.1
- (no CPE)range: < 3.13.14-r2
- (no CPE)range: < 3.12.13-r10
- (no CPE)range: < 3.12.13-r10
- (no CPE)range: < 3.12.13-8.1
- (no CPE)range: < 3.14.6-r3
- (no CPE)range: < 3.11.15-r8
- (no CPE)range: < 3.10.21
- (no CPE)range: < 3.13.14-2.1
- (no CPE)range: < 3.13.14-160000.2.1
(expand)+ 12 more
- (no CPE)
- cpe:2.3:a:python:python:*:*:*:*:*:*:*:*range: <3.10.21
- cpe:2.3:a:python:python:3.15.0:alpha1:*:*:*:*:*:*
- cpe:2.3:a:python:python:3.15.0:alpha2:*:*:*:*:*:*
- cpe:2.3:a:python:python:3.15.0:alpha3:*:*:*:*:*:*
- cpe:2.3:a:python:python:3.15.0:alpha4:*:*:*:*:*:*
- cpe:2.3:a:python:python:3.15.0:alpha5:*:*:*:*:*:*
- cpe:2.3:a:python:python:3.15.0:alpha6:*:*:*:*:*:*
- cpe:2.3:a:python:python:3.15.0:alpha7:*:*:*:*:*:*
- cpe:2.3:a:python:python:3.15.0:alpha8:*:*:*:*:*:*
- cpe:2.3:a:python:python:3.15.0:beta1:*:*:*:*:*:*
- cpe:2.3:a:python:python:3.15.0:beta2:*:*:*:*:*:*
- cpe:2.3:a:python:python:3.15.0:beta3:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
10- github.com/python/cpython/commit/0adb386f6e68eb2e73d32e19f235d012df009528nvdPatch
- github.com/python/cpython/commit/12dcbd74d3563016a8cb8c47e4898889f34f74ddnvdPatch
- github.com/python/cpython/commit/274de100bbf4345bd0c23ef5b446722e9e636908nvdPatch
- github.com/python/cpython/commit/5858e42c539dac8394636a6e9b30472b8994851fnvdPatch
- github.com/python/cpython/commit/71f2e02a52d47417a6fd69f456346cd8aa7aca98nvdPatch
- github.com/python/cpython/commit/aaf850fd333cd89e9aada03d92aaa788a6cb1bb8nvdPatch
- github.com/python/cpython/commit/db4a157c790479710a1a840d7937c5c815a6f8b6nvdPatch
- github.com/python/cpython/issues/143927nvdIssue TrackingPatch
- github.com/python/cpython/pull/151559nvdIssue TrackingPatch
- mail.python.org/archives/list/[email protected]/thread/CV4NE6AFCRJL7XQOHX7J5TSDHUWVWGJS/nvdMailing ListVendor Advisory
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