{"id":"CVE-2026-103995","state":"PUBLISHED","title":"Lenient parsing of integers for response body and chunk framing","description":"Response body and chunk parsing would handle non-hex or negative integers incorrectly which could result in misinterpreting HTTP response contents.","publishedAt":"2026-10-27T19:58:52.521Z","updatedAt":"2026-10-28T00:33:14.944Z","severity":{"score":2,"label":"Low","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N","source":"PSF"},"assigner":"PSF","products":["Python Software Foundation CPython"],"affected":[{"vendor":"Python Software Foundation","product":"CPython","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"3.16.0","versionType":"python"}],"modules":["http.client","http"],"repo":"https://github.com/python/cpython"}],"references":["https://github.com/python/cpython/pull/150752","https://github.com/python/cpython/issues/150751","https://github.com/python/cpython/commit/2eb2af805c156ca52b316bb4ced5e0ab3971d0ae","https://github.com/python/cpython/commit/9f52b443c002cccfb54bda0706a9276b6b4a109d"],"weaknesses":["CWE-444"],"ingestedAt":"2026-10-29T20:10:23.711Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/103xxx/CVE-2026-103995.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-103995","state":"PUBLISHED","datePublished":"2026-10-27T19:58:52.521Z","dateUpdated":"2026-10-28T00:33:14.944Z","assignerShortName":"PSF","assignerOrgId":"28c92f92-d60d-412d-b760-e73465c3df22","dateReserved":"2026-10-01T16:13:37.297Z"},"containers":{"cna":{"title":"Lenient parsing of integers for response body and chunk framing","descriptions":[{"lang":"en","value":"Response body and chunk parsing would handle non-hex or negative integers incorrectly which could result in misinterpreting HTTP response contents."}],"affected":[{"vendor":"Python Software Foundation","product":"CPython","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"3.16.0","versionType":"python"}],"modules":["http.client","http"],"repo":"https://github.com/python/cpython"}],"references":[{"url":"https://github.com/python/cpython/pull/150752","tags":["patch"]},{"url":"https://github.com/python/cpython/issues/150751","tags":["issue-tracking"]},{"url":"https://github.com/python/cpython/commit/2eb2af805c156ca52b316bb4ced5e0ab3971d0ae","tags":["patch"]},{"url":"https://github.com/python/cpython/commit/9f52b443c002cccfb54bda0706a9276b6b4a109d","tags":["patch"]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":2,"baseSeverity":"LOW","exploitMaturity":"NOT_DEFINED","privilegesRequired":"HIGH","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"LOW","userInteraction":"PASSIVE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-444","description":"CWE-444","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"PSF","orgId":"28c92f92-d60d-412d-b760-e73465c3df22","dateUpdated":"2026-10-28T00:33:14.944Z"},"credits":[{"lang":"en","type":"reporter","value":"Ekalabya Ghosh (https://github.com/not-ekalabya)"},{"lang":"en","type":"remediation developer","value":"metsw24-max (https://github.com/metsw24-max)"},{"lang":"en","type":"coordinator","value":"Seth Larson (https://github.com/sethmlarson)"},{"lang":"en","type":"remediation reviewer","value":"Petr Viktorin (https://github.com/encukou)"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"cvelib 1.8.0"}}}}}