MediumVulnerabilityLLM-specific

CVE-2026-121936: easyVoice server-side request forgery through openaiBaseUrl in /api/v1/tts

Source: NVD(opens in a new tab)
Identifier: CVE-2026-121936
Published: November 4, 2026
Record updated: November 4, 2026

Known exploitation: Not listed in the CISA Known Exploited Vulnerabilities catalog at the last check.

Summary

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

Mitigation

The source does not state a fix yet. Check the original advisory for updates.

Details

Scores and exploitation

CVSS score: 6.5(medium)
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Attack vector: network
Attack complexity: low
Privileges required: none
User interaction: none
EPSS: Not scored. FIRST had not published an EPSS score for this CVE when it was last checked on November 4, 2026.
Disclosure date: November 4, 2026

Weaknesses and techniques

Weakness (CWE): CWE-918
Attack pattern (CAPEC): CAPEC-664

Classification

Attack type: Other
Attack sophistication: Moderate
AI component targeted: API
Impact: Confidentiality,
Integrity
Labels: security

How this record was produced

Summaries, mitigations and labels on this page are generated automatically from the source. The linked source is authoritative. The source gives this advisory a description and no title, so the title above is a headline generated from the source text.

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-121936

First tracked: November 4, 2026 at 01:07 PM ET, from NVD/CVE Database

Classifier: claude-haiku-5-5, prompt v4

Classifier confidence: 85% (self-assessed)

Summary

Mitigation

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