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Taskview Community Missing Authentication via OAuth Dynamic Client Registration

Type: advisorySources: OSV

Taskview Community before 1.56.0 contains a missing authentication vulnerability that allows unauthenticated attackers to register arbitrary OAuth clients and take over user accounts by exploiting the OAuth 2.0 Dynamic Client Registration endpoint, which is enabled by default and requires no authentication. Attackers can send a POST request to the registration endpoint to obtain a client_id and client_secret, then craft a malicious authorization link pointing to an attacker-controlled redirect URI to capture authorization codes and exchange them for access tokens granting full API access to victim account data.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-93354
Confirmed fixed CVEs
Not specified
Updated in this feed
2 Nov 2026, 19:28 UTC · Revision 1

Source evidence

Taskview Community Missing Authentication via OAuth Dynamic Client Registration

core-osv · Original source

Published 24 Sept 2026, 19:58 UTC

Taskview Community before 1.56.0 contains a missing authentication vulnerability that allows unauthenticated attackers to register arbitrary OAuth clients and take over user accounts by exploiting the OAuth 2.0 Dynamic Client Registration endpoint, which is enabled by default and requires no authentication. Attackers can send a POST request to the registration endpoint to obtain a client_id and client_secret, then craft a malicious authorization link pointing to an attacker-controlled redirect URI to capture authorization codes and exchange them for access tokens granting full API access to victim account data.

osv:CVE-2026-93354
Complete source record
{
  "id": "e4598bf633c5e14dd0ecbea686f90d87cf579ede57baf09d10d61eda2b6ab796",
  "url": "https://osv.dev/vulnerability/CVE-2026-93354",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Taskview Community Missing Authentication via OAuth Dynamic Client Registration",
    "summary": "Taskview Community before 1.56.0 contains a missing authentication vulnerability that allows unauthenticated attackers to register arbitrary OAuth clients and take over user accounts by exploiting the OAuth 2.0 Dynamic Client Registration endpoint, which is enabled by default and requires no authentication. Attackers can send a POST request to the registration endpoint to obtain a client_id and client_secret, then craft a malicious authorization link pointing to an attacker-controlled redirect URI to capture authorization codes and exchange them for access tokens granting full API access to victim account data.",
    "evidence": "osv:CVE-2026-93354",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-93354",
      "aliases": [
        "CVE-2026-93354"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/gimanh/taskview-community",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "a8dfa8c9731d422a189b5b3c408f41a7e6c05823"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.56.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "fixed": "a8dfa8c9731d422a189b5b3c408f41a7e6c05823"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v1.56.0"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.56.0"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.53.0",
            "v1.52.0",
            "v1.43.0",
            "v1.42.5",
            "v1.41.0",
            "v1.32.0",
            "v1.24.0",
            "v1.20.7",
            "v1.20.4",
            "v1.19.6",
            "v1.19.0",
            "v1.18.2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93354.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:22.990352552Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93354.json",
        "https://github.com/Gimanh/taskview-community/releases/tag/v1.56.0",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-93354",
        "https://www.vulncheck.com/advisories/taskview-community-missing-authentication-via-oauth-dynamic-client-registration",
        "https://github.com/Gimanh/taskview-community"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-1188"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93354.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-93354",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 489159,
  "published_at": "2026-09-24T19:58:16.242+00:00"
}