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CVE-2026-110719

Status: DeferredMedium (6.9)—
Severity6.9Medium · CVSS 4.0
Exploitation probability0.36 %higher than 29% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitNot knownno public code found

Portkey AI Gateway 1.14.0 through 1.15.2 contains a server-side request forgery vulnerability that allows unauthenticated attackers to reach loopback and Docker host services because isValidCustomHost trusts localhost-style hosts when TRUSTED_CUSTOM_HOSTS is unset. Attackers can send /v1 requests with a crafted x-portkey-custom-host header, such as via the ollama provider, to make the gateway call internal services and return their responses.

CVSS

Base score
6.9
Version
4.0
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days
0.36 %
Percentile among all scored CVEs
29
Score date
10/21/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

SSRF explotable sin autenticación ni interacción (AV:N/PR:N/UI:N) mediante la cabecera x-portkey-custom-host; el gateway llama a servicios internos y devuelve sus respuestas, lo que equivale a proxy.

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

ATT&CK mitigations that cover these techniques

Filter Network TrafficVulnerability ScanningSSL/TLS InspectionPrivileged Account ManagementNetwork SegmentationNetwork Intrusion Prevention

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Portkey — AI GatewayAI

CWEs

References

Show 4 references

Raw JSON (NVD)

Show
{
  "id": "CVE-2026-110719",
  "cveTags": [],
  "metrics": {
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          "id": "CVE-2026-110719",
          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "poc"
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            {
              "automatable": "no"
            },
            {
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          ],
          "version": "2.0.3",
          "timestamp": "2026-10-20T01:30:54.212624Z"
        }
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    "cvssMetricV31": [
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          "integrityImpact": "LOW",
          "userInteraction": "NONE",
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          "confidentialityImpact": "LOW"
        },
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      }
    ],
    "cvssMetricV40": [
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        "type": "Secondary",
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        "cvssData": {
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          "Recovery": "NOT_DEFINED",
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          "Automatable": "NOT_DEFINED",
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "exploitMaturity": "NOT_DEFINED",
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          "subIntegrityImpact": "LOW",
          "vulnIntegrityImpact": "LOW",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "vulnAvailabilityImpact": "NONE",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "LOW",
          "vulnConfidentialityImpact": "LOW",
          "confidentialityRequirement": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
        }
      }
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  },
  "affected": [
    {
      "source": "disclosure@vulncheck.com",
      "affectedData": [
        {
          "repo": "https://github.com/Portkey-AI/gateway",
          "vendor": "Portkey-AI",
          "product": "gateway",
          "versions": [
            {
              "status": "affected",
              "version": "1.14.0",
              "versionType": "semver",
              "lessThanOrEqual": "1.15.2"
            }
          ],
          "packageURL": "pkg:npm/%40portkey-ai/gateway",
          "collectionURL": "https://www.npmjs.com",
          "defaultStatus": "unaffected"
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  "published": "2026-10-14T16:17:44.183",
  "references": [
    {
      "url": "https://github.com/Portkey-AI/gateway",
      "source": "disclosure@vulncheck.com"
    },
    {
      "url": "https://github.com/Portkey-AI/gateway/blob/ca7712947ec8c0887803990b746740d36011c697/src/middlewares/requestValidator/index.ts#L289",
      "source": "disclosure@vulncheck.com"
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      "source": "disclosure@vulncheck.com"
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  "vulnStatus": "Deferred",
  "weaknesses": [
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      "type": "Secondary",
      "source": "disclosure@vulncheck.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Portkey AI Gateway 1.14.0 through 1.15.2 contains a server-side request forgery vulnerability that allows unauthenticated attackers to reach loopback and Docker host services because isValidCustomHost trusts localhost-style hosts when TRUSTED_CUSTOM_HOSTS is unset. Attackers can send /v1 requests with a crafted x-portkey-custom-host header, such as via the ollama provider, to make the gateway call internal services and return their responses."
    }
  ],
  "lastModified": "2026-10-20T02:17:10.627",
  "sourceIdentifier": "disclosure@vulncheck.com"
}