CWE-20

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        "title": "CISA ADP Vulnrichment"
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              "version": "\u003e= 2026.6.0-latest, \u003c 2026.6.3"
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          "lang": "en",
          "value": "Discourse is an open-source discussion platform. Prior to 2026.1.8, 2026.6.3, 2026.7.2, and 2026.8.0, the Discourse post sanitizer allowed a stored cross-origin iframe to bypass the allowed_iframes prefix policy when the iframe src contained encoded userinfo. The sanitizer validated a decoded form differently from the stored iframe src, allowing the browser to interpret an attacker-controlled host while the allowlist check accepted the encoded URL as an allowed prefix. An authenticated user with posting privileges could persist the iframe in a post and cause attacker-controlled cross-origin content to be rendered. This issue is fixed in versions 2026.1.8, 2026.6.3, 2026.7.2, and 2026.8.0."
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          "name": "https://github.com/discourse/discourse/security/advisories/GHSA-54vw-chv3-wjpv",
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          "name": "https://github.com/discourse/discourse/pull/42882",
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      "title": "Discourse: Block post iframes whose encoded userinfo bypasses the allowed_iframes allowlist"
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              "value": "\u003cp\u003eThe LdapAuth and LinOTPAuth authentication plugins in MISP contain an authentication bypass vulnerability. Both LdapAuthenticate and LinOTPAuthenticate replace CakePHP\u0027s FormAuthenticate class but fail to replicate its _checkFields() input validation guard. As a result, the email and password fields extracted from the login request are passed to downstream authentication logic without verifying that they are non-empty strings.\u003c/p\u003e\u003cp\u003eIn the LDAP authenticator, an empty or null password is forwarded to ldap_bind(). Per RFC 4513 section 5.1.2, a bind request with a valid DN and an empty password constitutes an unauthenticated bind, which many LDAP directory servers accept as successful. An attacker who knows any valid user email address in the directory can therefore authenticate as that user without possessing a password. Additionally, non-string values (null, false, arrays) are either coerced to empty strings by ldap_bind(), raise TypeErrors, or are misinterpreted as find conditions in _findUser(), all of which can lead to unintended authentication outcomes.\u003c/p\u003e\u003cp\u003eIn the LinOTP authenticator, the same missing guard allows non-string credentials to be concatenated into the LinOTP verification request, and in the mixed-authentication branch an empty password is accepted against a stored hash of the empty string.\u003c/p\u003e\u003cp\u003eA secondary issue in the LDAP authenticator is that newly created user accounts (auto-provisioned on first LDAP login) were assigned an empty password. Because the save path skips validation, the empty string is hashed and stored. If the user later ceases to be found in LDAP and the mixed-authentication fallback is used, the stored hash of the empty string verifies against an empty password, again permitting unauthenticated access.\u003c/p\u003e\u003cp\u003eThe vulnerability requires that the affected plugin (LdapAuth or LinOTPAuth) is enabled on the MISP instance and that the attacker knows at least one valid email address registered in the directory or MISP user store. No prior authentication is required. Successful exploitation grants the attacker the full privileges of the impersonated user, which may include administrative access to threat intelligence data.\u003cbr\u003e\u003c/p\u003e\u003cp\u003eVersion affected: \u22642.5.45\u003cbr\u003e\u003c/p\u003e"
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              "value": "\u003cp\u003eThe fix adds explicit type and emptiness validation for the email and password fields in both LdapAuthenticate and LinOTPAuthenticate before any authentication logic is invoked. Non-string or empty credentials are rejected with a logged error and a false return. Additionally, the LDAP authenticator now assigns a cryptographically random password to auto-provisioned user accounts instead of an empty string, preventing the stored hash of \u0027\u0027 from being verifiable in the mixed-authentication fallback path. The LinOTP authenticator also rejects an empty password specifically in the mixed-authentication branch where the password is checked against the local database.\u003c/p\u003e"
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      "title": "MISP LdapAuth and LinOTPAuth Authentication Bypass via Empty or Non-String Credentials",
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                "cvssRationale": "AV:N: The vulnerability is exploitable over the network via the MISP web login endpoint. AC:L: Exploitation requires only sending a login request with an empty or non-string password field; no race conditions, specific directory configuration beyond accepting unauthenticated binds (which is common), or other special conditions are needed. AT:N: No attack target manipulation is required. PR:N: No prior authentication is needed; the attacker is attempting to authenticate. UI:N: No user interaction is required. VC:H: Successful exploitation grants the attacker the full data-access privileges of the impersonated user, potentially including all MISP threat intelligence data. VI:H: The attacker can create, modify, or delete MISP objects, tags, and configurations at the privilege level of the impersonated user. VA:N: No direct availability impact is demonstrated. SC/SI/SA:N: No separate subsequent system is identified; the impact is contained to the MISP instance itself.",
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          "value": "Snipe-IT before 8.7.0 fails to validate soft-deleted state in API checkout endpoints, allowing authenticated users with checkout permissions to bind live inventory to trashed targets. Attackers can submit POST requests to hardware, component, or consumable checkout endpoints with soft-deleted user, asset, or location IDs to create orphaned references that corrupt the asset ledger and audit trails."
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            "attackRequirements": "NONE",
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            "privilegesRequired": "LOW",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "LOW",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "LOW"
          },
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            "confidentialityImpact": "NONE",
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            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-20",
              "description": "Improper Input Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-09T13:32:25.880Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
        {
          "name": "GitHub Security Advisory (GHSA-qffp-xpqv-gqr4)",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://github.com/grokability/snipe-it/security/advisories/GHSA-qffp-xpqv-gqr4"
        },
        {
          "name": "VulnCheck Advisory: Snipe-IT before 8.7.0 Improper Input Validation via API Checkout",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/snipe-it-before-8.7.0-improper-input-validation-via-api-checkout"
        }
      ],
      "title": "Snipe-IT before 8.7.0 Improper Input Validation via API Checkout",
      "x_generator": {
        "engine": "vulncheck-endgame"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-86768",
    "datePublished": "2026-09-09T13:32:25.880Z",
    "dateReserved": "2026-09-08T11:35:02.617Z",
    "dateUpdated": "2026-09-09T14:31:38.683Z",
    "state": "PUBLISHED"
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}