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CVE-2026-0864

Configuration Injection via Carriage Return (\r) in write() method

Published: Jun 23, 2026Updated: Aug 18, 2026 Sources: CVE List NVDCWE-74
5.5MEDIUM
NVD MITRE
EPSS Score
0.1%
Top 97.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:LAC:LPR:LUI:NS:UC:NI:HA:N
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-74

Affected Products

Python Software Foundation
oss-project·USaka psf
CPython
OSS Libraries
python
oss-project·US
pythonLibraryLibrary
OSS Libraries

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Execution
Initial Access
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References

https://github.com/python/cpython/pull/151559
github.com
https://mail.python.org/archives/list/security-announce@python.org/thread/CV4NE6AFCRJL7XQOHX7J5TSDHUWVWGJS/
mail.python.org
https://github.com/python/cpython/issues/143927
github.com
and 7 more references View all →

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