{
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          "dateUpdated": "2026-11-09T21:04:57.164Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2026/11/09/24"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "modules": [
            "http",
            "http.cookiejar"
          ],
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              "version": "0",
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      "credits": [
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          "lang": "en",
          "type": "reporter",
          "value": "Grant Abejar (https://github.com/vinzabe)"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "Kirill Podoprigora (https://github.com/Eclips4)"
        },
        {
          "lang": "en",
          "type": "remediation reviewer",
          "value": "Victor Stinner (https://github.com/vstinner)"
        }
      ],
      "descriptions": [
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          "lang": "en",
          "supportingMedia": [
            {
              "type": "text/html",
              "value": "http.cookiejar.CookieJar deleted a stored cookie when a response carried an\nalready expired Set-Cookie header for it, using the Domain and Path\nattributes from the header without consulting the cookie policy. A server\ncould therefore delete cookies belonging to other domains from a shared\ncookie jar, such as the one used by urllib\u0027s HTTPCookieProcessor. The fix\nconsults the cookie policy before an expired cookie may delete an existing\none, as required by RFC 6265 section 5.3."
            }
          ],
          "value": "http.cookiejar.CookieJar deleted a stored cookie when a response carried an\nalready expired Set-Cookie header for it, using the Domain and Path\nattributes from the header without consulting the cookie policy. A server\ncould therefore delete cookies belonging to other domains from a shared\ncookie jar, such as the one used by urllib\u0027s HTTPCookieProcessor. The fix\nconsults the cookie policy before an expired cookie may delete an existing\none, as required by RFC 6265 section 5.3."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 6.3,
            "baseSeverity": "MEDIUM",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "LOW",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-346",
              "description": "CWE-346",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-11-10T00:24:54.866Z",
        "orgId": "28c92f92-d60d-412d-b760-e73465c3df22",
        "shortName": "PSF"
      },
      "references": [
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/python/cpython/pull/161570"
        },
        {
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/python/cpython/issues/161569"
        },
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://mail.python.org/archives/list/security-announce@python.org/thread/Y6IKNZ2VZUS2L6CLQICSFUEMCLT7OLTY/"
        },
        {
          "tags": [
            "patch"
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      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "`http.cookiejar` applies expired `Set-Cookie` to cookie store before policy validation",
      "x_generator": {
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  "cveMetadata": {
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    "datePublished": "2026-11-09T14:20:47.891Z",
    "dateReserved": "2026-11-07T00:18:32.381Z",
    "dateUpdated": "2026-11-10T00:24:54.866Z",
    "state": "PUBLISHED"
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