CVE-2026-0864
An attacker can exploit multiple vulnerabilities in CPython to manipulate files, bypass security measures, or disclose confidential information.
CSIRTS triage
- What
- An attacker can exploit multiple vulnerabilities in CPython to manipulate files, bypass security measures, or disclose confidential information.
- Who is affected
- Deployments of CPython are affected.
- Urgency
- Remediation is urgent due to the high severity of the vulnerabilities.
- Action
- Apply the latest security updates for CPython.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.13% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 3% of all EPSS-scored CVEs.
Advisory coverage (3)
- high[UPDATE] [high] CPython: Multiple vulnerabilitiescert-bund · 2026-08-25
- unknownMultiple vulnerabilities in CPython (June 25, 2026)cert-fr-avis · 2026-06-25
- unknownCVE-2026-0864: Configuration Injection via Carriage Return (\r) in write() methodmsrc · 2026-06-09
External references
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[](https://www.csirts.com/cve/CVE-2026-0864)