{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-0864","assignerOrgId":"28c92f92-d60d-412d-b760-e73465c3df22","state":"PUBLISHED","assignerShortName":"PSF","dateReserved":"2026-01-12T16:07:55.453Z","datePublished":"2026-06-23T17:42:01.947Z","dateUpdated":"2026-06-24T12:55:42.471Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"CPython","repo":"https://github.com/python/cpython","vendor":"Python Software Foundation","versions":[{"version":"0","lessThan":"3.15.0","status":"affected","versionType":"python"}]}],"credits":[{"lang":"en","type":"reporter","value":"D0n9 (https://github.com/D0n9)"},{"lang":"en","type":"remediation reviewer","value":"Petr Viktorin (https://github.com/encukou)"},{"lang":"en","type":"coordinator","value":"Seth Larson (https://github.com/sethmlarson)"}],"descriptions":[{"lang":"en","supportingMedia":[{"type":"text/html","value":"When using the \"configparser\" module to write configuration files\ncontaining multi-line text values with carriage return characters (\\r) the\nresulting file could be injected with unexpected keys and values if the\nattacker controls the written value."}],"value":"When using the \"configparser\" module to write configuration files\ncontaining multi-line text values with carriage return characters (\\r) the\nresulting file could be injected with unexpected keys and values if the\nattacker controls the written value."}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"LOCAL","baseScore":4.1,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"HIGH","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"PASSIVE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"providerMetadata":{"orgId":"28c92f92-d60d-412d-b760-e73465c3df22","shortName":"PSF","dateUpdated":"2026-06-24T12:55:42.471Z"},"references":[{"tags":["patch"],"url":"https://github.com/python/cpython/pull/151559"},{"tags":["vendor-advisory"],"url":"https://mail.python.org/archives/list/security-announce@python.org/thread/CV4NE6AFCRJL7XQOHX7J5TSDHUWVWGJS/"},{"tags":["issue-tracking"],"url":"https://github.com/python/cpython/issues/143927"},{"tags":["patch"],"url":"https://github.com/python/cpython/commit/5858e42c539dac8394636a6e9b30472b8994851f"},{"tags":["patch"],"url":"https://github.com/python/cpython/commit/0adb386f6e68eb2e73d32e19f235d012df009528"},{"tags":["patch"],"url":"https://github.com/python/cpython/commit/71f2e02a52d47417a6fd69f456346cd8aa7aca98"},{"tags":["patch"],"url":"https://github.com/python/cpython/commit/aaf850fd333cd89e9aada03d92aaa788a6cb1bb8"}],"source":{"discovery":"UNKNOWN"},"title":"Configuration Injection via Carriage Return (\\r) in write() method","x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-74","lang":"en","description":"CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')"}]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-23T18:34:23.504725Z","id":"CVE-2026-0864","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-06-23T18:34:49.788Z"}}]}}