CVE-2021-23336
Vulnerability from cvelistv5
Published
2021-02-15 12:15
Modified
2024-09-16 18:55
Summary
The package python/cpython from 0 and before 3.6.13, from 3.7.0 and before 3.7.10, from 3.8.0 and before 3.8.8, from 3.9.0 and before 3.9.2 are vulnerable to Web Cache Poisoning via urllib.parse.parse_qsl and urllib.parse.parse_qs by using a vector called parameter cloaking. When the attacker can separate query parameters using a semicolon (;), they can cause a difference in the interpretation of the request between the proxy (running with default configuration) and the server. This can result in malicious requests being cached as completely safe ones, as the proxy would usually not see the semicolon as a separator, and therefore would not include it in a cache key of an unkeyed parameter.
References
report@snyk.iohttp://www.openwall.com/lists/oss-security/2021/02/19/4Mailing List, Patch, Third Party Advisory
report@snyk.iohttp://www.openwall.com/lists/oss-security/2021/05/01/2Mailing List, Third Party Advisory
report@snyk.iohttps://github.com/python/cpython/pull/24297Patch, Third Party Advisory
report@snyk.iohttps://lists.apache.org/thread.html/ra8ce70088ba291f358e077cafdb14d174b7a1ce9a9d86d1b332d6367%40%3Cusers.airflow.apache.org%3E
report@snyk.iohttps://lists.apache.org/thread.html/rc005f4de9d9b0ba943ceb8ff5a21a5c6ff8a9df52632476698d99432%40%3Cannounce.apache.org%3E
report@snyk.iohttps://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E
report@snyk.iohttps://lists.debian.org/debian-lts-announce/2021/02/msg00030.htmlMailing List, Third Party Advisory
report@snyk.iohttps://lists.debian.org/debian-lts-announce/2021/04/msg00005.htmlMailing List, Third Party Advisory
report@snyk.iohttps://lists.debian.org/debian-lts-announce/2021/04/msg00015.htmlMailing List, Third Party Advisory
report@snyk.iohttps://lists.debian.org/debian-lts-announce/2023/09/msg00022.html
report@snyk.iohttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3EPYWWFDV22CJ5AOH5VCE72DOASZZ255/
report@snyk.iohttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3YKKDLXL3UEZ3J426C2XTBS63AHE46SM/
report@snyk.iohttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/46N6A52EGSXHJYCZWVMBJJIH4NWIV2B5/
report@snyk.iohttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FONHJIOZOFD7CD35KZL6SVBUTMBPGZGA/
report@snyk.iohttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HCQTCSP6SCVIYNIRUJC5X7YBVUHPLSC4/
report@snyk.iohttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HZTM7KLHFCE3LWSEVO2NAFLUHMGYMCRY/
report@snyk.iohttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IHQDU7NXA7EWAE4W7VO6MURVJIULEPPR/
report@snyk.iohttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KJXCMHLY7H3FIYLE4OKDYUILU2CCRUCZ/
report@snyk.iohttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LVNH6Z24IG3E67ZCQGGJ46FZB4XFLQNZ/
report@snyk.iohttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MNUN5SOMFL2BBKP6ZAICIIUPQKZDMGYO/
report@snyk.iohttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MP572OLHMS7MZO4KUPSCIMSZIA5IZZ62/
report@snyk.iohttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N6VXJZSZ6N64AILJX4CTMACYGQGHHD5C/
report@snyk.iohttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJSCSN722JO2E2AGPWD4NTGVELVRPB4R/
report@snyk.iohttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NODWHDIFBQE5RU5PUWUVE47JOT5VCMJ2/
report@snyk.iohttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OAGSWNGZJ6HQ5ISA67SNMK3CJRKICET7/
report@snyk.iohttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RSLQD5CCM75IZGAMBDGUZEATYU5YSGJ7/
report@snyk.iohttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SGIY6I4YS3WOXAK4SXKIEOC2G4VZKIR7/
report@snyk.iohttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TFTELUMWZE3KV3JB2H5EE6VFRZFRD5MV/
report@snyk.iohttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W2LSKBEFI5SYEY5FM6ICZVZM5WRQUCS4/
report@snyk.iohttps://security.gentoo.org/glsa/202104-04Third Party Advisory
report@snyk.iohttps://security.netapp.com/advisory/ntap-20210326-0004/Third Party Advisory
report@snyk.iohttps://snyk.io/blog/cache-poisoning-in-popular-open-source-packages/Technical Description, Third Party Advisory
report@snyk.iohttps://snyk.io/vuln/SNYK-UPSTREAM-PYTHONCPYTHON-1074933Exploit, Third Party Advisory
report@snyk.iohttps://www.oracle.com//security-alerts/cpujul2021.htmlPatch, Third Party Advisory
report@snyk.iohttps://www.oracle.com/security-alerts/cpuApr2021.htmlPatch, Third Party Advisory
report@snyk.iohttps://www.oracle.com/security-alerts/cpujan2022.htmlPatch, Third Party Advisory
report@snyk.iohttps://www.oracle.com/security-alerts/cpuoct2021.htmlPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2021/02/19/4Mailing List, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2021/05/01/2Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/python/cpython/pull/24297Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/ra8ce70088ba291f358e077cafdb14d174b7a1ce9a9d86d1b332d6367%40%3Cusers.airflow.apache.org%3E
af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/rc005f4de9d9b0ba943ceb8ff5a21a5c6ff8a9df52632476698d99432%40%3Cannounce.apache.org%3E
af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2021/02/msg00030.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2021/04/msg00005.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2021/04/msg00015.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2023/09/msg00022.html
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3EPYWWFDV22CJ5AOH5VCE72DOASZZ255/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3YKKDLXL3UEZ3J426C2XTBS63AHE46SM/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/46N6A52EGSXHJYCZWVMBJJIH4NWIV2B5/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FONHJIOZOFD7CD35KZL6SVBUTMBPGZGA/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HCQTCSP6SCVIYNIRUJC5X7YBVUHPLSC4/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HZTM7KLHFCE3LWSEVO2NAFLUHMGYMCRY/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IHQDU7NXA7EWAE4W7VO6MURVJIULEPPR/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KJXCMHLY7H3FIYLE4OKDYUILU2CCRUCZ/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LVNH6Z24IG3E67ZCQGGJ46FZB4XFLQNZ/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MNUN5SOMFL2BBKP6ZAICIIUPQKZDMGYO/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MP572OLHMS7MZO4KUPSCIMSZIA5IZZ62/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N6VXJZSZ6N64AILJX4CTMACYGQGHHD5C/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJSCSN722JO2E2AGPWD4NTGVELVRPB4R/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NODWHDIFBQE5RU5PUWUVE47JOT5VCMJ2/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OAGSWNGZJ6HQ5ISA67SNMK3CJRKICET7/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RSLQD5CCM75IZGAMBDGUZEATYU5YSGJ7/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SGIY6I4YS3WOXAK4SXKIEOC2G4VZKIR7/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TFTELUMWZE3KV3JB2H5EE6VFRZFRD5MV/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W2LSKBEFI5SYEY5FM6ICZVZM5WRQUCS4/
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202104-04Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20210326-0004/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://snyk.io/blog/cache-poisoning-in-popular-open-source-packages/Technical Description, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://snyk.io/vuln/SNYK-UPSTREAM-PYTHONCPYTHON-1074933Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com//security-alerts/cpujul2021.htmlPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com/security-alerts/cpuApr2021.htmlPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com/security-alerts/cpujan2022.htmlPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com/security-alerts/cpuoct2021.htmlPatch, Third Party Advisory
Impacted products
Vendor Product Version
Show details on NVD website


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            "url": "https://snyk.io/blog/cache-poisoning-in-popular-open-source-packages/"
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            "name": "[oss-security] 20210219 Django security releases: CVE-2021-23336: Web cache poisoning via ``django.utils.http.limited_parse_qsl()``",
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            "name": "[airflow-users] 20210501 CVE-2021-28359: Apache Airflow Reflected XSS via Origin Query Argument in URL",
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          },
          {
            "name": "[oss-security] 20210501 CVE-2021-28359: Apache Airflow Reflected XSS via Origin Query Argument in URL",
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          },
          {
            "name": "[announce] 20210501 Apache Airflow CVE: CVE-2021-28359: Apache Airflow Reflected XSS via Origin Query Argument in URL",
            "tags": [
              "mailing-list",
              "x_transferred"
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        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "python/cpython",
          "vendor": "n/a",
          "versions": [
            {
              "lessThan": "unspecified",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            },
            {
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              "version": "3.7.0",
              "versionType": "custom"
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              "version": "unspecified",
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              "status": "affected",
              "version": "3.8.0",
              "versionType": "custom"
            },
            {
              "lessThan": "3.8.8",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            },
            {
              "lessThan": "unspecified",
              "status": "affected",
              "version": "3.9.0",
              "versionType": "custom"
            },
            {
              "lessThan": "3.9.2",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
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      ],
      "credits": [
        {
          "lang": "en",
          "value": "Snyk Security Team"
        }
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      "datePublic": "2021-02-15T00:00:00",
      "descriptions": [
        {
          "lang": "en",
          "value": "The package python/cpython from 0 and before 3.6.13, from 3.7.0 and before 3.7.10, from 3.8.0 and before 3.8.8, from 3.9.0 and before 3.9.2 are vulnerable to Web Cache Poisoning via urllib.parse.parse_qsl and urllib.parse.parse_qs by using a vector called parameter cloaking. When the attacker can separate query parameters using a semicolon (;), they can cause a difference in the interpretation of the request between the proxy (running with default configuration) and the server. This can result in malicious requests being cached as completely safe ones, as the proxy would usually not see the semicolon as a separator, and therefore would not include it in a cache key of an unkeyed parameter."
        }
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      "metrics": [
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          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "exploitCodeMaturity": "PROOF_OF_CONCEPT",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "remediationLevel": "UNAVAILABLE",
            "reportConfidence": "CONFIRMED",
            "scope": "UNCHANGED",
            "temporalScore": 5.6,
            "temporalSeverity": "MEDIUM",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:H/E:P/RL:U/RC:C",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Web Cache Poisoning",
              "lang": "en",
              "type": "text"
            }
          ]
        }
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      "providerMetadata": {
        "dateUpdated": "2023-09-20T21:06:13.958312",
        "orgId": "bae035ff-b466-4ff4-94d0-fc9efd9e1730",
        "shortName": "snyk"
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      "references": [
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          "url": "https://snyk.io/vuln/SNYK-UPSTREAM-PYTHONCPYTHON-1074933"
        },
        {
          "url": "https://github.com/python/cpython/pull/24297"
        },
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        },
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          "name": "[debian-lts-announce] 20210405 [SECURITY] [DLA 2619-1] python3.5 security update",
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          "name": "[airflow-users] 20210501 CVE-2021-28359: Apache Airflow Reflected XSS via Origin Query Argument in URL",
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            "mailing-list"
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          "tags": [
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          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SGIY6I4YS3WOXAK4SXKIEOC2G4VZKIR7/"
        },
        {
          "name": "FEDORA-2021-12df7f7382",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RSLQD5CCM75IZGAMBDGUZEATYU5YSGJ7/"
        },
        {
          "url": "https://www.oracle.com/security-alerts/cpuApr2021.html"
        },
        {
          "url": "https://security.netapp.com/advisory/ntap-20210326-0004/"
        },
        {
          "url": "https://www.oracle.com//security-alerts/cpujul2021.html"
        },
        {
          "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
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        {
          "name": "[debian-lts-announce] 20230920 [SECURITY] [DLA 3575-1] python2.7 security update",
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          "url": "https://lists.debian.org/debian-lts-announce/2023/09/msg00022.html"
        }
      ],
      "title": "Web Cache Poisoning"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "bae035ff-b466-4ff4-94d0-fc9efd9e1730",
    "assignerShortName": "snyk",
    "cveId": "CVE-2021-23336",
    "datePublished": "2021-02-15T12:15:20.788790Z",
    "dateReserved": "2021-01-08T00:00:00",
    "dateUpdated": "2024-09-16T18:55:19.315Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-23336\",\"sourceIdentifier\":\"report@snyk.io\",\"published\":\"2021-02-15T13:15:12.433\",\"lastModified\":\"2024-11-21T05:51:31.403\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"The package python/cpython from 0 and before 3.6.13, from 3.7.0 and before 3.7.10, from 3.8.0 and before 3.8.8, from 3.9.0 and before 3.9.2 are vulnerable to Web Cache Poisoning via urllib.parse.parse_qsl and urllib.parse.parse_qs by using a vector called parameter cloaking. When the attacker can separate query parameters using a semicolon (;), they can cause a difference in the interpretation of the request between the proxy (running with default configuration) and the server. This can result in malicious requests being cached as completely safe ones, as the proxy would usually not see the semicolon as a separator, and therefore would not include it in a cache key of an unkeyed parameter.\"},{\"lang\":\"es\",\"value\":\"El paquete python/cpython desde versiones 0 y anteriores a 3.6.13, desde versiones 3.7.0 y anteriores a 3.7.10, desde versiones 3.8.0 y anteriores a 3.8.8, desde versiones 3.9.0 y anteriores a 3.9.2, son vulnerables al envenenamiento de cach\u00e9 web por medio de urllib.parse.parse_qsl y urllib.parse.parse_qs usando un vector llamado encubrimiento de par\u00e1metros.\u0026#xa0;Cuando el atacante puede separar los par\u00e1metros de la consulta usando un punto y coma (;), pueden causar una diferencia en la interpretaci\u00f3n de la petici\u00f3n entre el proxy (que se ejecuta con la configuraci\u00f3n predeterminada) y el servidor.\u0026#xa0;Esto puede resultar en que las peticiones maliciosas se almacenen en cach\u00e9 como completamente seguras, ya que el proxy normalmente no ver\u00eda el punto y coma como un separador y, por lo tanto, no lo incluir\u00eda en una clave de cach\u00e9 de un par\u00e1metro sin 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Advisory\"]},{\"url\":\"https://www.oracle.com/security-alerts/cpujan2022.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://www.oracle.com/security-alerts/cpuoct2021.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]}]}}"
  }
}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.