CVE-2026-55414Public exploitNetwork attack vectorHinoki check available

Unauthenticated SSRF via host-only URL validation

Published Oct 15, 2026 · Updated Oct 15, 2026

SSRF in NL Portal Backend Libraries allows remote attackers to send token-bearing requests via public GraphQL form resolvers. The getFormDefinitionByObjectenApiUrl and deprecated getFormDefinitionById resolvers lack authorization enforcement and pass caller-influenced URLs to ObjectsApiClient.getObjectByUrl, which attaches the privileged Objecten-API token after a host-only check. Requests remain on the configured host in standard deployments; token capture requires an attacker-controlled endpoint there, and typed deserialization limits returned data to form-definition-shaped objects.

CVSS severity5.3
Medium
EPSS probability0.44%
Next 30 days · Oct 18, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

SSRF in NL Portal Backend Libraries allows remote attackers to send token-bearing requests via public GraphQL form resolvers. The getFormDefinitionByObjectenApiUrl and deprecated getFormDefinitionById resolvers lack authorization enforcement and pass caller-influenced URLs to ObjectsApiClient.getObjectByUrl, which attaches the privileged Objecten-API token after a host-only check. Requests remain on the configured host in standard deployments; token capture requires an attacker-controlled endpoint there, and typed deserialization limits returned data to form-definition-shaped objects.

The record

CVE
CVE-2026-55414
Published
Oct 15, 2026
Updated
Oct 15, 2026
Vendor
NL Portal
Product
NL Portal Backend Libraries
Classifications
CWE-862, CWE-918
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 1.1.0, < 3.0.4
  2. Affected versionversion== 3.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

NL Portal · NL Portal Backend Librariesversion=>= 1.1.0, < 3.0.4; version== 3.1.0

Published CVSS scores

5.3GitHub_MCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-862Missing Authorization
CWE-918Server-Side Request Forgery (SSRF)

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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