Common Weakness Enumeration

CWE-287

Discouraged

Improper Authentication

Abstraction: Class · Status: Draft

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

5966 vulnerabilities reference this CWE, most recent first.

GHSA-HCWG-VJ9P-2XCH

Vulnerability from github – Published: 2022-05-14 03:31 – Updated: 2022-05-14 03:31
VLAI
Details

Improper input sanitization within the restricted administration shell on UCOPIA Wireless Appliance devices before 4.4.20, 5.0.x before 5.0.19, and 5.1.x before 5.1.11 allows authenticated remote attackers to escape the shell and escalate their privileges by uploading a .bashrc file containing the /bin/sh string. In some situations, authentication can be achieved via the bhu85tgb default password for the admin account.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2017-17743"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-287"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2018-03-22T05:29:00Z",
    "severity": "MODERATE"
  },
  "details": "Improper input sanitization within the restricted administration shell on UCOPIA Wireless Appliance devices before 4.4.20, 5.0.x before 5.0.19, and 5.1.x before 5.1.11 allows authenticated remote attackers to escape the shell and escalate their privileges by uploading a .bashrc file containing the /bin/sh string. In some situations, authentication can be achieved via the bhu85tgb default password for the admin account.",
  "id": "GHSA-hcwg-vj9p-2xch",
  "modified": "2022-05-14T03:31:05Z",
  "published": "2022-05-14T03:31:05Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-17743"
    },
    {
      "type": "WEB",
      "url": "https://securite.intrinsec.com/2018/03/19/cve-2017-17743-ucopia-shell-escape"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-HCXC-WF8J-23HV

Vulnerability from github – Published: 2026-06-19 14:35 – Updated: 2026-06-19 14:35
VLAI
Summary
OpenFGA: OIDC audience validation skipped when --authn-oidc-audience is unset
Details

Description

OpenFGA's OIDC authenticator skipped JWT audience (aud) validation when no audience was configured. In deployments where one identity provider issues tokens for multiple services, a token minted for an unrelated service could authenticate to OpenFGA.

Preconditions

This applies if the following preconditions are met:

  1. You run OpenFGA with authn.method set to oidc.
  2. You configured authn.oidc.issuer but did not set authn.oidc.audience (--authn-oidc-audience / OPENFGA_AUTHN_OIDC_AUDIENCE).

Fix

Upgrade to OpenFGA 1.18.0 or greater. OpenFGA now refuses to start in oidc mode unless both authn.oidc.issuer and authn.oidc.audience are set, and the aud claim is always validated.

Acknowledgements

OpenFGA would like to thank https://github.com/0xVijay for the report.

Show details on source website

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 1.17.1"
      },
      "package": {
        "ecosystem": "Go",
        "name": "github.com/openfga/openfga"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.18.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-55689"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-287"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-06-19T14:35:35Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "## Description\n\nOpenFGA\u0027s OIDC authenticator skipped JWT audience (`aud`) validation when no audience was configured.\nIn deployments where one identity provider issues tokens for multiple services,\na token minted for an unrelated service could authenticate to OpenFGA.\n\n## Preconditions\n\nThis applies if the following preconditions are met:\n\n1. You run OpenFGA with `authn.method` set to `oidc`.\n2. You configured `authn.oidc.issuer` but did **not** set\n   `authn.oidc.audience` (`--authn-oidc-audience` / `OPENFGA_AUTHN_OIDC_AUDIENCE`).\n\n## Fix\n\nUpgrade to OpenFGA 1.18.0 or greater. OpenFGA now refuses to start in `oidc`\nmode unless both `authn.oidc.issuer` and `authn.oidc.audience` are set, and the\n`aud` claim is always validated.\n\n## Acknowledgements\n\nOpenFGA would like to thank https://github.com/0xVijay for the report.",
  "id": "GHSA-hcxc-wf8j-23hv",
  "modified": "2026-06-19T14:35:35Z",
  "published": "2026-06-19T14:35:35Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/openfga/openfga/security/advisories/GHSA-hcxc-wf8j-23hv"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/openfga/openfga"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "OpenFGA: OIDC audience validation skipped when --authn-oidc-audience is unset"
}

GHSA-HCXW-PRP6-Q3JQ

Vulnerability from github – Published: 2022-05-24 17:48 – Updated: 2025-10-22 00:32
VLAI
Details

Pulse Connect Secure 9.0R3/9.1R1 and higher is vulnerable to an authentication bypass vulnerability exposed by the Windows File Share Browser and Pulse Secure Collaboration features of Pulse Connect Secure that can allow an unauthenticated user to perform remote arbitrary code execution on the Pulse Connect Secure gateway. This vulnerability has been exploited in the wild.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2021-22893"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-287",
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-04-23T17:15:00Z",
    "severity": "CRITICAL"
  },
  "details": "Pulse Connect Secure 9.0R3/9.1R1 and higher is vulnerable to an authentication bypass vulnerability exposed by the Windows File Share Browser and Pulse Secure Collaboration features of Pulse Connect Secure that can allow an unauthenticated user to perform remote arbitrary code execution on the Pulse Connect Secure gateway. This vulnerability has been exploited in the wild.",
  "id": "GHSA-hcxw-prp6-q3jq",
  "modified": "2025-10-22T00:32:07Z",
  "published": "2022-05-24T17:48:22Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-22893"
    },
    {
      "type": "WEB",
      "url": "https://blog.pulsesecure.net/pulse-connect-secure-security-update"
    },
    {
      "type": "WEB",
      "url": "https://kb.cert.org/vuls/id/213092"
    },
    {
      "type": "WEB",
      "url": "https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44784"
    },
    {
      "type": "WEB",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22893"
    },
    {
      "type": "WEB",
      "url": "https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.html"
    },
    {
      "type": "WEB",
      "url": "https://www.kb.cert.org/vuls/id/213092"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-HF24-M986-WX2W

Vulnerability from github – Published: 2022-05-13 01:37 – Updated: 2022-05-13 01:37
VLAI
Details

This vulnerability allows remote attackers to bypass authentication on vulnerable installations of NetGain Systems Enterprise Manager 7.2.699 build 1001. User interaction is required to exploit this vulnerability. The specific flaw exists within the MainFilter servlet. The issue results from the lack of proper string matching inside the doFilter method. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of Administrator. Was ZDI-CAN-5099.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2017-16590"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-287"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2018-01-23T01:29:00Z",
    "severity": "HIGH"
  },
  "details": "This vulnerability allows remote attackers to bypass authentication on vulnerable installations of NetGain Systems Enterprise Manager 7.2.699 build 1001. User interaction is required to exploit this vulnerability. The specific flaw exists within the MainFilter servlet. The issue results from the lack of proper string matching inside the doFilter method. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of Administrator. Was ZDI-CAN-5099.",
  "id": "GHSA-hf24-m986-wx2w",
  "modified": "2022-05-13T01:37:24Z",
  "published": "2022-05-13T01:37:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-16590"
    },
    {
      "type": "WEB",
      "url": "https://zerodayinitiative.com/advisories/ZDI-17-955"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-HF2M-J98R-4FQW

Vulnerability from github – Published: 2021-11-30 22:21 – Updated: 2021-12-01 15:06
VLAI
Summary
API token verification can be bypassed in NodeBB
Details

Impact

Incorrect logic present in the token verification step unintentionally allowed master token access to the API.

Patches

The vulnerability has been patch as of v1.18.5.

Workarounds

Cherry-pick commit hash 04dab1d550cdebf4c1567bca9a51f8b9ca48a500 to receive this patch in lieu of a full upgrade.

For more information

If you have any questions or comments about this advisory: * Email us at security@nodebb.org

Show details on source website

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "nodebb"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.15.0"
            },
            {
              "fixed": "1.18.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-43786"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-287"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-11-30T14:35:05Z",
    "nvd_published_at": "2021-11-29T20:15:00Z",
    "severity": "CRITICAL"
  },
  "details": "### Impact\nIncorrect logic present in the token verification step unintentionally allowed master token access to the API.\n\n### Patches\nThe vulnerability has been patch as of v1.18.5.\n\n### Workarounds\nCherry-pick commit hash 04dab1d550cdebf4c1567bca9a51f8b9ca48a500 to receive this patch in lieu of a full upgrade.\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Email us at [security@nodebb.org](mailto:security@nodebb.org)\n",
  "id": "GHSA-hf2m-j98r-4fqw",
  "modified": "2021-12-01T15:06:58Z",
  "published": "2021-11-30T22:21:05Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/NodeBB/NodeBB/security/advisories/GHSA-hf2m-j98r-4fqw"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-43786"
    },
    {
      "type": "WEB",
      "url": "https://github.com/NodeBB/NodeBB/commit/04dab1d550cdebf4c1567bca9a51f8b9ca48a500"
    },
    {
      "type": "WEB",
      "url": "https://blog.sonarsource.com/nodebb-remote-code-execution-with-one-shot"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/NodeBB/NodeBB"
    },
    {
      "type": "WEB",
      "url": "https://github.com/NodeBB/NodeBB/releases/tag/v1.18.5"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "API token verification can be bypassed in NodeBB "
}

GHSA-HF35-FQ38-46HH

Vulnerability from github – Published: 2022-05-02 03:45 – Updated: 2022-05-02 03:45
VLAI
Details

login.php in Zenas PaoLink 1.0, when register_globals is enabled, allows remote attackers to bypass authentication and gain administrative access by setting the login_ok parameter to 1.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2009-3423"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-287"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2009-09-25T22:30:00Z",
    "severity": "MODERATE"
  },
  "details": "login.php in Zenas PaoLink 1.0, when register_globals is enabled, allows remote attackers to bypass authentication and gain administrative access by setting the login_ok parameter to 1.",
  "id": "GHSA-hf35-fq38-46hh",
  "modified": "2022-05-02T03:45:05Z",
  "published": "2022-05-02T03:45:05Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2009-3423"
    },
    {
      "type": "WEB",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/52099"
    },
    {
      "type": "WEB",
      "url": "http://secunia.com/advisories/36023"
    },
    {
      "type": "WEB",
      "url": "http://www.exploit-db.com/exploits/9292"
    },
    {
      "type": "WEB",
      "url": "http://www.osvdb.org/56756"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-HF4R-P94V-76J9

Vulnerability from github – Published: 2023-01-18 21:30 – Updated: 2025-04-04 18:30
VLAI
Details

An issue was discovered in OpenText Content Suite Platform 22.1 (16.2.19.1803). The request handler for ll.KeepAliveSession sets a valid AdminPwd cookie even when the Web Admin password was not entered. This allows access to endpoints, which require a valid AdminPwd cookie, without knowing the password.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2022-45922"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-287"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-01-18T21:15:00Z",
    "severity": "HIGH"
  },
  "details": "An issue was discovered in OpenText Content Suite Platform 22.1 (16.2.19.1803). The request handler for ll.KeepAliveSession sets a valid AdminPwd cookie even when the Web Admin password was not entered. This allows access to endpoints, which require a valid AdminPwd cookie, without knowing the password.",
  "id": "GHSA-hf4r-p94v-76j9",
  "modified": "2025-04-04T18:30:32Z",
  "published": "2023-01-18T21:30:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-45922"
    },
    {
      "type": "WEB",
      "url": "https://sec-consult.com/vulnerability-lab/advisory/multiple-post-authentication-vulnerabilities-including-rce-opentexttm-extended-ecm"
    },
    {
      "type": "WEB",
      "url": "http://packetstormsecurity.com/files/170615/OpenText-Extended-ECM-22.3-File-Deletion-LFI-Privilege-Escsalation.html"
    },
    {
      "type": "WEB",
      "url": "http://seclists.org/fulldisclosure/2023/Jan/14"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-HF78-8M34-FWXP

Vulnerability from github – Published: 2022-05-17 05:43 – Updated: 2022-05-17 05:43
VLAI
Details

The Remote Console in IBM Lotus Domino, when a certain unsupported configuration involving UNC share pathnames is used, allows remote attackers to bypass authentication and execute arbitrary code via unspecified vectors, aka SPR PRAD89WGRS.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2011-0920"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-287"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2011-02-08T22:00:00Z",
    "severity": "HIGH"
  },
  "details": "The Remote Console in IBM Lotus Domino, when a certain unsupported configuration involving UNC share pathnames is used, allows remote attackers to bypass authentication and execute arbitrary code via unspecified vectors, aka SPR PRAD89WGRS.",
  "id": "GHSA-hf78-8m34-fwxp",
  "modified": "2022-05-17T05:43:45Z",
  "published": "2022-05-17T05:43:45Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2011-0920"
    },
    {
      "type": "WEB",
      "url": "http://www-01.ibm.com/support/docview.wss?uid=swg21461514"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-HF9V-JVM3-FR3H

Vulnerability from github – Published: 2022-05-17 05:17 – Updated: 2025-07-10 18:31
VLAI
Details

The Central application in i-GEN opLYNX before 2.01.9 allows remote attackers to bypass authentication via vectors involving the disabling of browser JavaScript support.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2012-4688"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-287"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2012-12-31T11:50:00Z",
    "severity": "HIGH"
  },
  "details": "The Central application in i-GEN opLYNX before 2.01.9 allows remote attackers to bypass authentication via vectors involving the disabling of browser JavaScript support.",
  "id": "GHSA-hf9v-jvm3-fr3h",
  "modified": "2025-07-10T18:31:03Z",
  "published": "2022-05-17T05:17:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2012-4688"
    },
    {
      "type": "WEB",
      "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-12-362-01"
    },
    {
      "type": "WEB",
      "url": "http://www.us-cert.gov/control_systems/pdf/ICSA-12-362-01.pdf"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-HFFF-WFJ9-CPM8

Vulnerability from github – Published: 2022-05-14 01:50 – Updated: 2022-05-14 01:50
VLAI
Details

An issue was discovered on Foscam C2 devices with System Firmware 1.11.1.8 and Application Firmware 2.72.1.32, and Opticam i5 devices with System Firmware 1.5.2.11 and Application Firmware 2.21.1.128. The FTP and RTSP services make it easier for attackers to conduct brute-force authentication attacks, because failed-authentication limits apply only to HTTP (not FTP or RTSP).

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2018-19076"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-287"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2018-11-07T18:29:00Z",
    "severity": "CRITICAL"
  },
  "details": "An issue was discovered on Foscam C2 devices with System Firmware 1.11.1.8 and Application Firmware 2.72.1.32, and Opticam i5 devices with System Firmware 1.5.2.11 and Application Firmware 2.21.1.128. The FTP and RTSP services make it easier for attackers to conduct brute-force authentication attacks, because failed-authentication limits apply only to HTTP (not FTP or RTSP).",
  "id": "GHSA-hfff-wfj9-cpm8",
  "modified": "2022-05-14T01:50:35Z",
  "published": "2022-05-14T01:50:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-19076"
    },
    {
      "type": "WEB",
      "url": "https://sintonen.fi/advisories/foscam-ip-camera-multiple-vulnerabilities.txt"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

Mitigation
Architecture and Design

Strategy: Libraries or Frameworks

Use an authentication framework or library such as the OWASP ESAPI Authentication feature.

CAPEC-114: Authentication Abuse

An attacker obtains unauthorized access to an application, service or device either through knowledge of the inherent weaknesses of an authentication mechanism, or by exploiting a flaw in the authentication scheme's implementation. In such an attack an authentication mechanism is functioning but a carefully controlled sequence of events causes the mechanism to grant access to the attacker.

CAPEC-115: Authentication Bypass

An attacker gains access to application, service, or device with the privileges of an authorized or privileged user by evading or circumventing an authentication mechanism. The attacker is therefore able to access protected data without authentication ever having taken place.

CAPEC-151: Identity Spoofing

Identity Spoofing refers to the action of assuming (i.e., taking on) the identity of some other entity (human or non-human) and then using that identity to accomplish a goal. An adversary may craft messages that appear to come from a different principle or use stolen / spoofed authentication credentials.

CAPEC-194: Fake the Source of Data

An adversary takes advantage of improper authentication to provide data or services under a falsified identity. The purpose of using the falsified identity may be to prevent traceability of the provided data or to assume the rights granted to another individual. One of the simplest forms of this attack would be the creation of an email message with a modified "From" field in order to appear that the message was sent from someone other than the actual sender. The root of the attack (in this case the email system) fails to properly authenticate the source and this results in the reader incorrectly performing the instructed action. Results of the attack vary depending on the details of the attack, but common results include privilege escalation, obfuscation of other attacks, and data corruption/manipulation.

CAPEC-22: Exploiting Trust in Client

An attack of this type exploits vulnerabilities in client/server communication channel authentication and data integrity. It leverages the implicit trust a server places in the client, or more importantly, that which the server believes is the client. An attacker executes this type of attack by communicating directly with the server where the server believes it is communicating only with a valid client. There are numerous variations of this type of attack.

CAPEC-57: Utilizing REST's Trust in the System Resource to Obtain Sensitive Data

This attack utilizes a REST(REpresentational State Transfer)-style applications' trust in the system resources and environment to obtain sensitive data once SSL is terminated.

CAPEC-593: Session Hijacking

This type of attack involves an adversary that exploits weaknesses in an application's use of sessions in performing authentication. The adversary is able to steal or manipulate an active session and use it to gain unathorized access to the application.

CAPEC-633: Token Impersonation

An adversary exploits a weakness in authentication to create an access token (or equivalent) that impersonates a different entity, and then associates a process/thread to that that impersonated token. This action causes a downstream user to make a decision or take action that is based on the assumed identity, and not the response that blocks the adversary.

CAPEC-650: Upload a Web Shell to a Web Server

By exploiting insufficient permissions, it is possible to upload a web shell to a web server in such a way that it can be executed remotely. This shell can have various capabilities, thereby acting as a "gateway" to the underlying web server. The shell might execute at the higher permission level of the web server, providing the ability the execute malicious code at elevated levels.

CAPEC-94: Adversary in the Middle (AiTM)

An adversary targets the communication between two components (typically client and server), in order to alter or obtain data from transactions. A general approach entails the adversary placing themself within the communication channel between the two components.