Common Weakness Enumeration

CWE-303

Allowed

Incorrect Implementation of Authentication Algorithm

Abstraction: Base · Status: Draft

API response cwe.mitre.org

The requirements for the product dictate the use of an established authentication algorithm, but the implementation of the algorithm is incorrect.

167 vulnerabilities reference this CWE, most recent first.

GHSA-6HGP-J96H-RQW4

Vulnerability from github – Published: 2026-05-04 18:30 – Updated: 2026-05-04 21:30
VLAI
Details

In adbd_tls_verify_cert of auth.cpp, there is a possible bypass of wireless ADB mutual authentication due to a logic error in the code. This could lead to remote (proximal/adjacent) code execution as the shell user with no additional execution privileges needed. User interaction is not needed for exploitation.

Severity
8.8 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2026-0073"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-303"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-04T18:16:26Z",
    "severity": "HIGH"
  },
  "details": "In adbd_tls_verify_cert of auth.cpp, there is a possible bypass of wireless ADB mutual authentication due to a logic error in the code. This could lead to remote (proximal/adjacent) code execution as the shell user with no additional execution privileges needed. User interaction is not needed for exploitation.",
  "id": "GHSA-6hgp-j96h-rqw4",
  "modified": "2026-05-04T21:30:24Z",
  "published": "2026-05-04T18:30:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-0073"
    },
    {
      "type": "WEB",
      "url": "https://source.android.com/docs/security/bulletin/2026/2026-05-01"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-6RQH-8465-2XCW

Vulnerability from github – Published: 2025-04-14 15:31 – Updated: 2025-04-23 15:09
VLAI
Summary
Mattermost vulnerable to Incorrect Implementation of Authentication Algorithm
Details

Mattermost versions 10.5.x <= 10.5.1, 10.4.x <= 10.4.3, 9.11.x <= 9.11.9 fail to invalidate the cache when a user account is converted to a bot which allows an attacker to login to the bot exactly one time via normal credentials.

Severity
5.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/mattermost/mattermost/server/v8"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "10.5.0"
            },
            {
              "fixed": "10.5.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/mattermost/mattermost/server/v8"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "9.11.0"
            },
            {
              "fixed": "9.11.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/mattermost/mattermost/server/v8"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "8.0.0-20250220161544-fd356b62b4dd"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-2475"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-303"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-04-14T22:00:55Z",
    "nvd_published_at": "2025-04-14T15:15:24Z",
    "severity": "MODERATE"
  },
  "details": "Mattermost versions 10.5.x \u003c= 10.5.1, 10.4.x \u003c= 10.4.3, 9.11.x \u003c= 9.11.9 fail to invalidate the cache when a user account is converted to a bot which allows an attacker to login to the bot exactly one time via normal credentials.",
  "id": "GHSA-6rqh-8465-2xcw",
  "modified": "2025-04-23T15:09:22Z",
  "published": "2025-04-14T15:31:59Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-2475"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mattermost/mattermost/commit/124547a9ef424431e1e6cf09bdba6c1099d415de"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mattermost/mattermost/commit/40fd60714bd055e00c16301ba6dc0fddfc44e15e"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mattermost/mattermost/commit/88523ceed8a7547c4a4203a30e7c3a8097346280"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mattermost/mattermost/commit/bcd7a4c2bd856dbb40fcda227b363fa5f6f548a7"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mattermost/mattermost/commit/fd356b62b4dd3318d2c8019d2310abdd6ce24c8c"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/mattermost/mattermost"
    },
    {
      "type": "WEB",
      "url": "https://mattermost.com/security-updates"
    },
    {
      "type": "WEB",
      "url": "https://pkg.go.dev/vuln/GO-2025-3610"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Mattermost vulnerable to Incorrect Implementation of Authentication Algorithm"
}

GHSA-6VX8-PCWV-XHF4

Vulnerability from github – Published: 2025-06-05 00:38 – Updated: 2025-06-05 00:38
VLAI
Summary
SignXML's signature verification with HMAC is vulnerable to an algorithm confusion attack
Details

When verifying signatures with X509 certificate validation turned off and HMAC shared secret set (signxml.XMLVerifier.verify(require_x509=False, hmac_key=...), prior versions of SignXML are vulnerable to a potential algorithm confusion attack. Unless the user explicitly limits the expected signature algorithms using the signxml.XMLVerifier.verify(expect_config=...) setting, an attacker may supply a signature unexpectedly signed with a key other than the provided HMAC key, using a different (asymmetric key) signature algorithm.

Starting with signxml 4.0.4, specifying hmac_key causes the set of accepted signature algorithms to be restricted to HMAC only, if not already restricted by the user.

Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "signxml"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.0.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-48994"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-303"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-06-05T00:38:20Z",
    "nvd_published_at": "2025-06-02T17:15:40Z",
    "severity": "MODERATE"
  },
  "details": "When verifying signatures with X509 certificate validation turned off and HMAC shared secret set (`signxml.XMLVerifier.verify(require_x509=False, hmac_key=...`), prior versions of SignXML are vulnerable to a potential algorithm confusion attack. Unless the user explicitly limits the expected signature algorithms using the `signxml.XMLVerifier.verify(expect_config=...)` setting, an attacker may supply a signature unexpectedly signed with a key other than the provided HMAC key, using a different (asymmetric key) signature algorithm.\n\nStarting with signxml 4.0.4, specifying `hmac_key` causes the set of accepted signature algorithms to be restricted to HMAC only, if not already restricted by the user.",
  "id": "GHSA-6vx8-pcwv-xhf4",
  "modified": "2025-06-05T00:38:20Z",
  "published": "2025-06-05T00:38:20Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/XML-Security/signxml/security/advisories/GHSA-6vx8-pcwv-xhf4"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-48994"
    },
    {
      "type": "WEB",
      "url": "https://github.com/XML-Security/signxml/commit/e3c0c2b82a3329a65d917830657649c98b8c7600"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/XML-Security/signxml"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "SignXML\u0027s signature verification with HMAC is vulnerable to an algorithm confusion attack"
}

GHSA-8259-2X72-2GVC

Vulnerability from github – Published: 2024-09-11 15:31 – Updated: 2026-02-02 15:37
VLAI
Summary
Eclipse Dataspace Components's ConsumerPullTransferTokenValidationApiController doesn't check for token validit
Details

In Eclipse Dataspace Components, from version 0.5.0 and before version 0.9.0, the ConsumerPullTransferTokenValidationApiController does not check for token validity (expiry, not-before, issuance date), which can allow an attacker to bypass the check for token expiration. The issue requires to have a dataplane configured to support http proxy consumer pull AND include the module "transfer-data-plane". The affected code was marked deprecated from the version 0.6.0 in favour of Dataplane Signaling. In 0.9.0 the vulnerable code has been removed.

Severity
7.3 (High)
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:N
5.1 (Medium)
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/RE:L/U:Green
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.eclipse.edc:transfer-data-plane"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.5.0"
            },
            {
              "fixed": "0.9.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-8642"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-287",
      "CWE-303"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-09-11T17:31:04Z",
    "nvd_published_at": "2024-09-11T14:15:14Z",
    "severity": "MODERATE"
  },
  "details": "In Eclipse Dataspace Components, from version 0.5.0 and before version 0.9.0, the ConsumerPullTransferTokenValidationApiController does not check for token validity (expiry, not-before, issuance date), which can allow an attacker to bypass the check for token expiration. The issue requires to have a dataplane configured to support http proxy consumer pull AND include the module \"transfer-data-plane\". The affected code was marked deprecated from the version 0.6.0 in favour of Dataplane Signaling. In 0.9.0 the vulnerable code has been removed.",
  "id": "GHSA-8259-2x72-2gvc",
  "modified": "2026-02-02T15:37:32Z",
  "published": "2024-09-11T15:31:12Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-8642"
    },
    {
      "type": "WEB",
      "url": "https://github.com/eclipse-edc/Connector/commit/04899e91dcdb4a407db4eb7af3e7b6ff9a9e9ad6"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/eclipse-edc/Connector"
    },
    {
      "type": "WEB",
      "url": "https://github.com/eclipse-edc/Connector/blob/bcb2e42aee82ce1863be3dcbdab29919d39a0e97/extensions/control-plane/transfer/transfer-data-plane/src/main/java/org/eclipse/edc/connector/controlplane/transfer/dataplane/api/ConsumerPullTransferTokenValidationApiController.java"
    },
    {
      "type": "WEB",
      "url": "https://github.com/eclipse-edc/Connector/releases/tag/v0.9.0"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.eclipse.org/security/cve-assignment/-/issues/28"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/234"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:L/U:Green",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Eclipse Dataspace Components\u0027s ConsumerPullTransferTokenValidationApiController doesn\u0027t check for token validit"
}

GHSA-83C4-FFJP-MXP9

Vulnerability from github – Published: 2026-05-19 09:31 – Updated: 2026-06-26 09:30
VLAI
Summary
Keycloak: Revoked Tokens Can Remain Active When Both Realm-Level and Client-Level `notBefore` Revocation Policies are Configured
Details

A flaw was found in Keycloak. When both realm-level and client-level notBefore revocation policies are configured, Keycloak's OpenID Connect (OIDC) Introspection feature fails to properly honor the realm-level policy. This allows tokens that should have been revoked to remain active, potentially leading to unauthorized access or continued session validity. This could impact the security of systems utilizing Keycloak for identity and access management.

Severity
5.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Show details on source website
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.keycloak:keycloak-services"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "26.6.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-8922"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-303"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-06-04T17:30:58Z",
    "nvd_published_at": "2026-05-19T08:16:18Z",
    "severity": "MODERATE"
  },
  "details": "A flaw was found in Keycloak. When both realm-level and client-level `notBefore` revocation policies are configured, Keycloak\u0027s OpenID Connect (OIDC) Introspection feature fails to properly honor the realm-level policy. This allows tokens that should have been revoked to remain active, potentially leading to unauthorized access or continued session validity. This could impact the security of systems utilizing Keycloak for identity and access management.",
  "id": "GHSA-83c4-ffjp-mxp9",
  "modified": "2026-06-26T09:30:45Z",
  "published": "2026-05-19T09:31:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8922"
    },
    {
      "type": "WEB",
      "url": "https://github.com/keycloak/keycloak/issues/49118"
    },
    {
      "type": "WEB",
      "url": "https://github.com/keycloak/keycloak/pull/49129"
    },
    {
      "type": "WEB",
      "url": "https://github.com/keycloak/keycloak/commit/b6cd645683f469724cd588fac415fe09bd20a27a"
    },
    {
      "type": "WEB",
      "url": "https://github.com/keycloak/keycloak/commit/c5bda802e98b412e42fa62ff6240669e9ea4a858"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:25097"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:25098"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:30049"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:30050"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2026-8922"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2479586"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/keycloak/keycloak"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Keycloak: Revoked Tokens Can Remain Active When Both Realm-Level and Client-Level `notBefore` Revocation Policies are Configured"
}

GHSA-86XF-RV86-26V4

Vulnerability from github – Published: 2026-01-16 15:31 – Updated: 2026-01-16 15:31
VLAI
Details

Incorrect Implementation of Authentication Algorithm vulnerability in ABB ABB Ability OPTIMAX.This issue affects ABB Ability OPTIMAX: 6.1, 6.2, from 6.3.0 before 6.3.1-251120, from 6.4.0 before 6.4.1-251120.

Severity
8.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
9.2 (Critical)
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2025-14510"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-303"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-01-16T13:16:10Z",
    "severity": "CRITICAL"
  },
  "details": "Incorrect Implementation of Authentication Algorithm vulnerability in ABB ABB Ability OPTIMAX.This issue affects ABB Ability OPTIMAX: 6.1, 6.2, from 6.3.0 before 6.3.1-251120, from 6.4.0 before 6.4.1-251120.",
  "id": "GHSA-86xf-rv86-26v4",
  "modified": "2026-01-16T15:31:24Z",
  "published": "2026-01-16T15:31:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-14510"
    },
    {
      "type": "WEB",
      "url": "https://search.abb.com/library/Download.aspx?DocumentID=9AKK108472A1331\u0026LanguageCode=en\u0026DocumentPartId=\u0026Action=Launch"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

GHSA-8CGX-9CCJ-3GWR

Vulnerability from github – Published: 2025-05-30 15:30 – Updated: 2025-05-30 18:48
VLAI
Summary
Mattermost fails to clear Google OAuth credentials
Details

Mattermost versions 10.7.x <= 10.7.0, 10.6.x <= 10.6.2, 10.5.x <= 10.5.3, 9.11.x <= 9.11.12 fail to clear Google OAuth credentials when converting user accounts to bot accounts, allowing attackers to gain unauthorized access to bot accounts via the Google OAuth signup flow.

Severity
4.2 (Medium)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
Show details on source website
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/mattermost/mattermost/server/v8"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "10.7.0-rc1"
            },
            {
              "fixed": "10.7.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/mattermost/mattermost/server/v8"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "10.0.0-rc1"
            },
            {
              "fixed": "10.5.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/mattermost/mattermost/server/v8"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "9.0.0-rc1"
            },
            {
              "fixed": "9.11.13"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/mattermost/mattermost/server/v8"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "8.0.0-20250414095146-04676582cdd2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/mattermost/mattermost/server/v8"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "10.6.0-rc1"
            },
            {
              "fixed": "10.6.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-2571"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-303"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-05-30T18:48:23Z",
    "nvd_published_at": "2025-05-30T15:15:40Z",
    "severity": "MODERATE"
  },
  "details": "Mattermost versions 10.7.x \u003c= 10.7.0, 10.6.x \u003c= 10.6.2, 10.5.x \u003c= 10.5.3, 9.11.x \u003c= 9.11.12 fail to clear Google OAuth credentials when converting user accounts to bot accounts, allowing attackers to gain unauthorized access to bot accounts via the Google OAuth signup flow.",
  "id": "GHSA-8cgx-9ccj-3gwr",
  "modified": "2025-05-30T18:48:23Z",
  "published": "2025-05-30T15:30:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-2571"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mattermost/mattermost/commit/04676582cdd26f4fdfa78fcf60a7f8745e6b27f5"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/mattermost/mattermost"
    },
    {
      "type": "WEB",
      "url": "https://mattermost.com/security-updates"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Mattermost fails to clear Google OAuth credentials"
}

GHSA-8PRM-248R-H957

Vulnerability from github – Published: 2026-07-21 16:13 – Updated: 2026-07-21 16:13
VLAI
Summary
Microsoft Security Advisory CVE-2026-47300 – .NET Elevation of Privilege Vulnerability
Details

Executive summary

Microsoft is releasing this security advisory to provide information about a vulnerability in ASP.NET Core Negotiate Authentication (Microsoft.AspNetCore.Authentication.Negotiate). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.

An elevation of privilege vulnerability exists in the ASP.NET Core Negotiate authentication handler in .NET 8, .NET 9, and .NET 10 due to improper validation.

Announcement

Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/TBD

CVSS Details

  • Version: 3.1
  • Severity: High
  • Score: 8.8
  • Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • Weakness: CWE-303 (Incorrect Implementation of Authentication Algorithm)

Affected Platforms

  • Platforms: All
  • Architectures: All

Mitigation Factors

Your ASP.NET Core app is only affected if it uses Negotiate authentication and LDAP to retrieve role information.

Affected Packages

The vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below

.NET 10.0

Package name Affected version Patched version
Microsoft.AspNetCore.Authentication.Negotiate >= 10.0.0, <= 10.0.9 10.0.10

.NET 9.0

Package name Affected version Patched version
Microsoft.AspNetCore.Authentication.Negotiate >= 9.0.0, <= 9.0.17 9.0.18

.NET 8.0

Package name Affected version Patched version
Microsoft.AspNetCore.Authentication.Negotiate >= 8.0.0, <= 8.0.28 8.0.29

Advisory FAQ

How do I know if I am affected?

If using a package listed in affected packages, you're exposed to the vulnerability.

How do I fix the issue?

  1. To fix the issue please install the latest version of .NET. If you have installed one or more .NET SDKs through Visual Studio, Visual Studio will prompt you to update Visual Studio, which will also update your .NET SDKs.
  2. If your application references the vulnerable nuget package, update the package reference to the patched version. You can list the versions you have installed by running the dotnet --info command.

Once you have installed the updated runtime or SDK, restart your apps for the update to take effect.

Additionally, if you've deployed self-contained applications targeting any of the impacted versions, these applications are also vulnerable and must be recompiled and redeployed.

Other Information

Reporting Security Issues

If you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ.

Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty.

Support

You can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue.

Disclaimer

The information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.

External Links

CVE-2026-47300

Acknowledgements

Artur Stetsko

Revisions

V1.0 (July 14, 2026): Advisory published.

Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Show details on source website
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 10.0.9"
      },
      "package": {
        "ecosystem": "NuGet",
        "name": "Microsoft.AspNetCore.Authentication.Negotiate"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "10.0.0"
            },
            {
              "fixed": "10.0.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 9.0.17"
      },
      "package": {
        "ecosystem": "NuGet",
        "name": "Microsoft.AspNetCore.Authentication.Negotiate"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "9.0.0"
            },
            {
              "fixed": "9.0.18"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 8.0.28"
      },
      "package": {
        "ecosystem": "NuGet",
        "name": "Microsoft.AspNetCore.Authentication.Negotiate"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "8.0.0"
            },
            {
              "fixed": "8.0.29"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-47300"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-303"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-07-21T16:13:38Z",
    "nvd_published_at": "2026-07-14T19:17:08Z",
    "severity": "HIGH"
  },
  "details": "## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in ASP.NET Core Negotiate Authentication (Microsoft.AspNetCore.Authentication.Negotiate). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\nAn elevation of privilege vulnerability exists in the ASP.NET Core Negotiate authentication handler in .NET 8, .NET 9, and .NET 10 due to improper validation.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/**TBD**\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** High\n- **Score:** 8.8\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`\n- **Weakness:** CWE-303 (Incorrect Implementation of Authentication Algorithm)\n\n## Affected Platforms\n\n- **Platforms:** All\n- **Architectures:** All\n\n### Mitigation Factors\n\nYour ASP.NET Core app is only affected if it uses Negotiate authentication and LDAP to retrieve role information.\n\n## \u003ca name=\"affected-packages\"\u003e\u003c/a\u003eAffected Packages\nThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below\n\n### \u003ca name=\".NET 10.0\"\u003e\u003c/a\u003e.NET 10.0\nPackage name | Affected version | Patched version\n------------ | ---------------- | -------------------------\n[Microsoft.AspNetCore.Authentication.Negotiate](https://www.nuget.org/packages/Microsoft.AspNetCore.Authentication.Negotiate)               | \u003e= 10.0.0, \u003c= 10.0.9 | 10.0.10\n\n### \u003ca name=\".NET 9.0\"\u003e\u003c/a\u003e.NET 9.0\nPackage name | Affected version | Patched version\n------------ | ---------------- | -------------------------\n[Microsoft.AspNetCore.Authentication.Negotiate](https://www.nuget.org/packages/Microsoft.AspNetCore.Authentication.Negotiate)               | \u003e= 9.0.0, \u003c= 9.0.17 | 9.0.18\n\n### \u003ca name=\".NET 8.0\"\u003e\u003c/a\u003e.NET 8.0\nPackage name | Affected version | Patched version\n------------ | ---------------- | -------------------------\n[Microsoft.AspNetCore.Authentication.Negotiate](https://www.nuget.org/packages/Microsoft.AspNetCore.Authentication.Negotiate)               | \u003e= 8.0.0, \u003c= 8.0.28 | 8.0.29\n\n## Advisory FAQ\n\n### \u003ca name=\"how-affected\"\u003e\u003c/a\u003eHow do I know if I am affected?\n\nIf using a package listed in [affected packages](#affected-packages), you\u0027re exposed to the vulnerability.\n\n### \u003ca name=\"how-fix\"\u003e\u003c/a\u003eHow do I fix the issue?\n\n1. To fix the issue please install the latest version of .NET. If you have installed one or more .NET SDKs through Visual Studio, Visual Studio will prompt you to update Visual Studio, which will also update your .NET SDKs.\n2. If your application references the vulnerable nuget package, update the package reference to the patched version. You can list the versions you have installed by running the `dotnet --info` command.\n\nOnce you have installed the updated runtime or SDK, restart your apps for the update to take effect.\n\nAdditionally, if you\u0027ve deployed [self-contained applications](https://docs.microsoft.com/dotnet/core/deploying/#self-contained-deployments-scd) targeting any of the impacted versions, these applications are also vulnerable and must be recompiled and redeployed.\n\n## Other Information\n\n### Reporting Security Issues\n\nIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the [MSRC Researcher Portal](https://msrc.microsoft.com/report/vulnerability/new). Further information can be found in the MSRC [Report an Issue FAQ](https://www.microsoft.com/msrc/faqs-report-an-issue).\n\nSecurity reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty.\n\n### Support\n\nYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue.\n\n### Disclaimer\n\nThe information provided in this advisory is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.\n\n### External Links\n\n[CVE-2026-47300]( https://www.cve.org/CVERecord?id=CVE-2026-47300)\n\n### Acknowledgements\n\nArtur Stetsko\n\n### Revisions\n\nV1.0 (July 14, 2026): Advisory published.",
  "id": "GHSA-8prm-248r-h957",
  "modified": "2026-07-21T16:13:38Z",
  "published": "2026-07-21T16:13:38Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/dotnet/aspnetcore/security/advisories/GHSA-8prm-248r-h957"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-47300"
    },
    {
      "type": "WEB",
      "url": "https://github.com/dotnet/announcements/issues/409"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/dotnet/aspnetcore"
    },
    {
      "type": "WEB",
      "url": "https://github.com/dotnet/aspnetcore/discussions/67785"
    },
    {
      "type": "WEB",
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47300"
    }
  ],
  "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"
    }
  ],
  "summary": "Microsoft Security Advisory CVE-2026-47300 \u2013 .NET Elevation of Privilege Vulnerability"
}

GHSA-8QW7-Q76P-7F4H

Vulnerability from github – Published: 2024-07-22 15:32 – Updated: 2024-07-22 15:32
VLAI
Details

In JetBrains TeamCity before 2024.07 an OAuth code for JetBrains Space could be stolen via Space Application connection

Severity
3.5 (Low)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2024-41829"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-287",
      "CWE-303"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-07-22T15:15:05Z",
    "severity": "LOW"
  },
  "details": "In JetBrains TeamCity before 2024.07 an OAuth code for JetBrains Space could be stolen via Space Application connection",
  "id": "GHSA-8qw7-q76p-7f4h",
  "modified": "2024-07-22T15:32:42Z",
  "published": "2024-07-22T15:32:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-41829"
    },
    {
      "type": "WEB",
      "url": "https://www.jetbrains.com/privacy-security/issues-fixed"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-8WW9-XWC2-P9CC

Vulnerability from github – Published: 2024-11-09 18:30 – Updated: 2024-11-14 18:30
VLAI
Details

Mattermost versions 9.11.x <= 9.11.2, and 9.5.x <= 9.5.10 fail to protect the mfa code against replay attacks, which allows an attacker to reuse the MFA code within ~30 seconds

Severity
3.1 (Low)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2024-36250"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-294",
      "CWE-303"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-11-09T18:15:14Z",
    "severity": "LOW"
  },
  "details": "Mattermost versions 9.11.x \u003c= 9.11.2, and 9.5.x \u003c= 9.5.10 fail to\u00a0protect the mfa code against replay attacks, which allows an attacker to reuse the MFA code within\u00a0~30 seconds",
  "id": "GHSA-8ww9-xwc2-p9cc",
  "modified": "2024-11-14T18:30:33Z",
  "published": "2024-11-09T18:30:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-36250"
    },
    {
      "type": "WEB",
      "url": "https://mattermost.com/security-updates"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

No mitigation information available for this CWE.

CAPEC-90: Reflection Attack in Authentication Protocol

An adversary can abuse an authentication protocol susceptible to reflection attack in order to defeat it. Doing so allows the adversary illegitimate access to the target system, without possessing the requisite credentials. Reflection attacks are of great concern to authentication protocols that rely on a challenge-handshake or similar mechanism. An adversary can impersonate a legitimate user and can gain illegitimate access to the system by successfully mounting a reflection attack during authentication.

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