HIGHCVSS 8.1Vulnerability
CVE-2026-49464
NL Portal Backend Libraries provide backend components for Dutch government portals that interact with residents, customers, suppliers, and partner organizations. The `nl.nl-portal:taak` package from version 1.5.0 through 3.0.0 fails to verify ownership when processing the `submitTaakV2` GraphQL mutation, allowing an authenticated user who knows or guesses another user’s task ID to read its form data, overwrite its submitted data, and mark the task as completed. Version 3.0.1 contains a patch. As a workaround, block the `submitTaakV2` mutation at the API gateway or restrict the `/graphql` endpoint to trusted networks
Properties
- Summary
- NL Portal: IDOR allows any authenticated user to complete and tamper with another user's taak
- Severity
- HIGH
- Epss score
- 0.0035
- Cvss severity
- HIGH
- Cvss score
- 8.1
- Retrieved at
- 2026-10-21T01:24:49+00:00
- Ghsa published
- 2026-07-08T21:12:00Z
- Source url
- https://github.com/advisories/GHSA-6h3c-r723-7fx3
- Ghsa updated
- 2026-07-08T21:12:01Z
- Ghsa id
- GHSA-6h3c-r723-7fx3
- Score
- 8.1
- Last source
- FIRST EPSS
- Cve id
- CVE-2026-49464
- Cvss vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- First seen by Signal
- 2026-09-12T16:58:09+00:00
- Is ghsa only
- false
- Vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- Published at
- 2026-09-11T21:17:10.523
- Last modified
- 2026-09-30T17:51:56.193
- Epss percentile
- 0.27172
Related Entities (3)
AFFECTS (1)
HAS_WEAKNESS (1)
VULNERABLE_TO (1)
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