Medium [CVE-2026-0864] Python configparser: Configuration injection via crafted multi-line input
This medium-severity Red Hat Linux advisory covers CVE-2026-0864 affecting Red Hat Enterprise Linux 8, Red Hat package: python36.
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Summary
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.
This occurs if the input contains multi-line text with carriage return characters, leading to potential configuration manipulation. Red Hat severity: Moderate — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N).
Weakness: CWE-93. Affected Red Hat products: Red Hat Enterprise Linux 8.
Red Hat does not currently list a fixing RHSA for this CVE.
Affected products named by the advisory: Red Hat package: python36.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 14 days ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 14 days ago·verify at source
Mitigation checklist
- Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Official advisory · high-confidence parse· fetched 14 days ago·verify at source
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