CVE-2026-0864
mediumEPSS 0.001 · 2 %ileDEEUUSEPSS · scored 2026-10-17
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (36)
Products and version ranges known to be affected.
advisories (5)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-2044CPython: Mehrere SchwachstellenDeutsch2026-06-23csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in CPython ausnutzen, um Dateien zu manipulieren, Sicherheitsmaßnahmen zu umgehen oder vertrauliche Informationen offenzulegen.
- BIT-libpython-2026-0864Configuration Injection via Carriage Return (\r) in write() method2026-07-30vendor · osvUS
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.
- BIT-python-2026-0864Configuration Injection via Carriage Return (\r) in write() method2026-07-30vendor · osvUS
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.
- BIT-python-min-2026-0864Configuration Injection via Carriage Return (\r) in write() method2026-07-30vendor · osvUS
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.
- PSF-2026-292026-06-23vendor · osvUS
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.
also known as (7)
Other names and identifiers for this entity.
- CNNVD-2026-52609096cnnvd
- EUVD-2026-38554enisa_euvd
- GHSA-g345-7jg6-m22penisa_euvd
- BIT-libpython-2026-0864osv
- BIT-python-2026-0864osv
- BIT-python-min-2026-0864osv
- PSF-2026-29osv
sources
Which sources assert this record, and when.
references (24)
External citations — patches, advisories, analysis.
- https://github.com/python/cpython/commit/5858e42c539dac8394636a6e9b30472b8994851fcnnvd
- https://github.com/python/cpython/issues/143927cnnvd
- https://github.com/python/cpython/pull/151559cnnvd
- https://mail.python.org/archives/list/security-announce@python.org/thread/CV4NE6AFCRJL7XQOHX7J5TSDHUWVWGJS/cnnvd
- https://github.com/python/cpython/commit/0adb386f6e68eb2e73d32e19f235d012df009528enisa_euvd
- https://github.com/python/cpython/commit/12dcbd74d3563016a8cb8c47e4898889f34f74ddenisa_euvd
- https://github.com/python/cpython/commit/274de100bbf4345bd0c23ef5b446722e9e636908enisa_euvd
- https://github.com/python/cpython/commit/5858e42c539dac8394636a6e9b30472b8994851fenisa_euvd
Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.
Free scan