# CVE-2026-58490: Tracecat: Unsigned SAML response accepted in Docker Compose SAML deployments due to empty signing defaults

Status: published. Published: 2026-11-06. Updated: 2026-11-06.

Tracecat is an open-source security automation platform for teams and AI agents. From version 0.37.0 until 1.0.0-beta.49, Docker Compose deployments with SAML enabled can render SAML_SIGNED_ASSERTIONS and SAML_SIGNED_RESPONSES as empty values, overriding secure application defaults and disabling both signature requirements. An unauthenticated attacker who can reach the SAML assertion consumer endpoint can submit a forged unsigned response for an existing Tracecat user email address and obtain that user’s session. Targeting an existing superadmin can result in superadmin account takeover. Exploitation does not create users when SAML user creation is disabled and does not affect default Fargate or Helm deployments. Version 1.0.0-beta.49 removes the insecure deployment pass-through and requires signed assertions and responses.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- TracecatHQ / tracecat: >= 0.37.0, < 1.0.0-beta.49 (affected). Source: CNA: GitHub_M

## Severity and prioritization

- CVSS 3.1: 9.8 (critical); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H; source: CNA: GitHub_M

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-347

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/TracecatHQ/tracecat/security/advisories/GHSA-6g53-h6fh-c3pj (CNA: GitHub_M; x_refsource_CONFIRM)

- https://github.com/TracecatHQ/tracecat/pull/2824 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/TracecatHQ/tracecat/pull/2825 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/TracecatHQ/tracecat/pull/2826 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/TracecatHQ/tracecat/commit/018258ba6a17c36cbfa7ca977526c34fb6afc35f (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/TracecatHQ/tracecat/commit/a97aafbfd667a6b9a3b7b524e1c1bfa9d8c59779 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/TracecatHQ/tracecat/commit/dab64eb7ac0eb2088783ca14f4cb2d058547bfff (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/TracecatHQ/tracecat/releases/tag/1.0.0-beta.49 (CNA: GitHub_M; x_refsource_MISC)

## Provenance

- CNA: GitHub_M: https://www.cve.org/CVERecord?id=CVE-2026-58490; retrieved 2026-11-06; source updated 2026-11-06

Revision: c75a4756627d2c8f9facd5538ed9cb84be2f164b9a22bd4ecf8bc67817c6f333

Canonical: https://y2.dev/cve/CVE-2026-58490

## Agent and API access

Public CVE pages, Markdown, and JSON are free to read without an account or API key.

- Public catalog: https://y2.dev/cve/index.json. Follow nextCursor with the same search, filters, sort, and limit (1–100). A null cursor marks the end.

- WebMCP: search_cve_disclosures, get_cve_disclosure, get_cve_page_markdown, get_y2_cve_access. Available in compatible browsers.

- Cyber API: https://api.y2.dev/api/v2/cyber/cves and https://api.y2.dev/api/v2/cyber/cves/{cveId}.

- Y2 Pro or Elite: create a workspace API key with the intel:cyber scope and send Authorization: Bearer <Y2_API_KEY>. Setup: https://y2.dev/docs/api/create-key.

- x402: Pay per request without an account or API key. Omit Authorization, read the HTTP 402 PAYMENT-REQUIRED challenge, validate its current requirements, and retry with PAYMENT-SIGNATURE through an authorized payment client. These browser tools never make payments. Guide: https://y2.dev/docs/api/x402.

- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

Collected public records only. Check source status for coverage and freshness.