MediumVulnerabilityLLM-specific

CVE-2026-89278: GPTranslate WordPress plugin exposes plaintext API key to unauthenticated users

Source: NVD(opens in a new tab)
Identifier: CVE-2026-89278
Published: September 18, 2026
Record updated: October 9, 2026

Known exploitation: Not listed in the CISA Known Exploited Vulnerabilities catalog at the last check.
EPSS: 0.4%

Summary

The GPTranslate WordPress plugin, all versions up to and including 2.34.6, exposes sensitive information through the enqueue_frontend_scripts function (CVE-2026-89278). Unauthenticated attackers can fetch any public page, apply the inverse transformation bundled in the plugin's public JavaScript asset, and recover the plaintext third-party AI provider API key (OpenAI, DeepL, xAI/Grok, Gemini, Claude, or Google Cloud Translation). The exposure affects the default configuration (gpt-3.5-turbo in client mode) and all supported non-DeepSeek providers, while deepseek-* models and gpt-* models in server-proxy mode suppress key emission.

Mitigation

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

Details

Scores and exploitation

CVSS score: 5.3(medium)
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector: network
Attack complexity: low
Privileges required: none
User interaction: none
EPSS: 0.4%Estimated probability that this CVE is exploited in the next 30 days, from the FIRST Exploit Prediction Scoring System. Read on November 4, 2026.
Disclosure date: September 18, 2026

Weaknesses and techniques

Weakness (CWE): CWE-200
Attack pattern (CAPEC): CAPEC-116

Affected

Vendors: OpenAI,
Google,
Anthropic,
Microsoft,
Meta,
Amazon

Classification

Attack type: Other
Attack sophistication: Trivial
AI component targeted: API
Impact: Confidentiality
Labels: security,
industry

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-2026-89278

First tracked: September 18, 2026 at 08:08 AM ET, from NVD/CVE Database

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

Classifier confidence: 90% (self-assessed)

Summary

Mitigation

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