# CVE-2026-121936: easyVoice before 0.0.23 SSRF via openaiBaseUrl in TTS API

Status: published. Published: 2026-11-04. Updated: 2026-11-04.

easyVoice before 0.0.23 contains a server-side request forgery vulnerability that allows unauthenticated attackers to make the server send POST requests by supplying openaiBaseUrl with useLLM enabled. Attackers can target loopback and internal services through /api/v1/tts endpoints, using reflected error messages in the x-generate-tts-warning header to probe internal hosts and ports.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/cosin2077/easyVoice/pull/88
- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/cosin2077/easyVoice/commit/82fcb5b2f324c84b3f1808b29c6f44df16ccd42e

## Affected products and versions

- cosin2077 / easyVoice (cosin2077/easyVoice): ≥ 0; < 0.0.23 (affected, semver). Source: CNA: VulnCheck

## Severity and prioritization

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

- CVSS 3.1: 6.5 (medium); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N; source: CNA: VulnCheck

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-918

## Exploit evidence

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

## References

- https://github.com/cosin2077/easyVoice/issues/87 (CNA: VulnCheck; issue-tracking)

- https://github.com/cosin2077/easyVoice/pull/88 (CNA: VulnCheck; issue-tracking, patch)

- https://github.com/cosin2077/easyVoice/commit/82fcb5b2f324c84b3f1808b29c6f44df16ccd42e (CNA: VulnCheck; patch)

- https://github.com/cosin2077/easyVoice/releases/tag/v0.0.23 (CNA: VulnCheck; release-notes)

- https://github.com/cosin2077/easyVoice/blob/be08c5f3fed07f3af749defcf04e590ffcb0c48d/packages/backend/src/utils/ssrf.ts#L28-L47 (CNA: VulnCheck; technical-description)

- https://www.vulncheck.com/advisories/easyvoice-before-0.0.23-ssrf-via-openaibaseurl-in-tts-api (CNA: VulnCheck; third-party-advisory)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-121936; retrieved 2026-11-04; source updated 2026-11-04

Revision: b8e6370549ce318c0060afa6c093c41cafc7cd05d8e6e063d8591c4b4d0448b5

Canonical: https://y2.dev/cve/CVE-2026-121936

## 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.

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