HighVulnerability

CVE-2026-85178: Helicone decrypted provider key retrieval via GET /v1/vault/key/{providerKeyId}

Source: NVD(opens in a new tab)
Identifier: CVE-2026-85178
Published: September 3, 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

Helicone's VaultManager.getDecryptedProviderKeyById() function, reachable through the GET /v1/vault/key/{providerKeyId} endpoint, does not check that the requester's organization matches the vault key's organization identifier. An attacker with admin or owner privileges in any organization can retrieve decrypted upstream provider credentials belonging to other tenants, including plaintext OpenAI, Anthropic, and Bedrock API keys.

Mitigation

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

Details

Scores and exploitation

CVSS score: 7.7(high)
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Attack vector: network
Attack complexity: low
Privileges required: low
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 3, 2026

Weaknesses and techniques

Weakness (CWE): CWE-639

Affected

Vendors: OpenAI,
Anthropic,
Amazon

Classification

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

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-2026-85178

First tracked: September 3, 2026 at 02:09 PM ET, from NVD/CVE Database

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

Classifier confidence: 90% (self-assessed)

Summary

Mitigation

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