HighVulnerabilityLLM-specific

CVE-2026-110719: Portkey AI Gateway server-side request forgery via x-portkey-custom-host header

Source: NVD(opens in a new tab)
Identifier: CVE-2026-110719
Published: October 14, 2026
Record updated: October 14, 2026

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

Summary

Portkey AI Gateway versions 1.14.0 through 1.15.2 contain a server-side request forgery flaw tracked as CVE-2026-110719. Because isValidCustomHost trusts localhost-style hosts when TRUSTED_CUSTOM_HOSTS is unset, unauthenticated attackers can send /v1 requests with a crafted x-portkey-custom-host header, for example via the ollama provider, so the gateway calls loopback and Docker host services and returns their responses.

Mitigation

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

Details

Scores and exploitation

CVSS score: 7.2(high)
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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 October 14, 2026.
Disclosure date: October 14, 2026

Weaknesses and techniques

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

Classification

Attack type: Other
Attack sophistication: Trivial
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-2026-110719

First tracked: October 14, 2026 at 08:10 PM ET, from NVD/CVE Database

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

Classifier confidence: 90% (self-assessed)

Summary

Mitigation

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