CiviForm: Trusted-Intermediary IDOR discloses any citizen's name and email

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-107856
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-09 21:17:03 UTC
Updated2026-10-09 21:17:03 UTC
DescriptionCiviForm simplifies applications for government benefits programs by reusing applicant data across multiple benefit applications. Prior to 3.33.0, GET /admin/tiDash/editClientForm/:accountId verifies that the requester is a Trusted Intermediary but showEditClientForm performs a raw lookupAccount(accountId) without confirming that the citizen account belongs to the requester's trustedIntermediaryGroup. An authenticated Trusted Intermediary can enumerate accountId values and read the applicant display name, including the citizen's name and email address, for accounts outside the intermediary's group. This issue is fixed in version 3.33.0.

Risk And Classification

Primary CVSS: v3.1 4.5 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N

Problem Types: CWE-639 | CWE-639 CWE-639: Authorization Bypass Through User-Controlled Key

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary4.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N
3.1CNADECLARED4.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Civiform Civiform affected < 3.33.0 Not specified

References

ReferenceSourceLinkTags
github.com/civiform/civiform/commit/ccfd84ff2d9ee6570a1b1524c7ae3a3732e1... [email protected] github.com
github.com/civiform/civiform/pull/13635 [email protected] github.com
github.com/civiform/civiform/releases/tag/v3.33.0 [email protected] github.com
github.com/civiform/civiform/security/advisories/GHSA-qv7c-9hjr-9rv7 [email protected] github.com
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