# CVE-2026-81190: KurrentDB: Privileged access to read $all enables arbitrary file read and GET-only SSRF

Status: published. Published: 2026-11-05. Updated: 2026-11-05.

KurrentDB is a database engineered for modern software applications and event-driven architectures. In version 26.1.0, a user authorized to read the $all stream can use Secondary Indexing query capabilities to read arbitrary files accessible to the database process, enumerate directories, and issue HTTP GET requests from that process. The default configuration limits this privilege to administrators. The flaw does not permit file writes and does not expose environment variables. This issue is fixed in version 26.1.1.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- kurrent-io / KurrentDB: = 26.1.0 (affected). Source: CNA: GitHub_M

## Severity and prioritization

- CVSS 4.0: 6.9 (medium); CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N; source: CNA: GitHub_M

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-73, CWE-918

## Exploit evidence

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

## References

- https://github.com/kurrent-io/KurrentDB/security/advisories/GHSA-r8vq-5875-cq97 (CNA: GitHub_M; x_refsource_CONFIRM)

- https://github.com/kurrent-io/KurrentDB/pull/5674 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/kurrent-io/KurrentDB/commit/18706d0d5fcec5e2fbb0d20f76638d113b5842c8 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/kurrent-io/KurrentDB/releases/tag/v26.1.1 (CNA: GitHub_M; x_refsource_MISC)

- https://kurrentdb.kurrent.io/releases/kurrentdb-26-1-1-security-release (CNA: GitHub_M; x_refsource_MISC)

## Provenance

- CNA: GitHub_M: https://www.cve.org/CVERecord?id=CVE-2026-81190; retrieved 2026-11-05; source updated 2026-11-05

Revision: 94022556b96c23fc9d7c63349f9998cd2dc46ff4d21d4bd7a586e822775f2749

Canonical: https://y2.dev/cve/CVE-2026-81190

## 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.