CVE-2026-107856CWE-639

CVE-2026-107856

Medium · published October 10, 2026

CVSS v3.1
4.5
EPSS
0%
Percentile
13.4
In the wild
Unconfirmed
What it is

CiviForm 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.

The record
Technical detail
CVSS v3.1
4.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00233 · 13.4th percentile
Weakness
CWE-639 · Authorization Bypass Through User-Controlled Key
Published
2026-10-10T01:17Z
References (4)
EPSS history
Timeline
  • 11 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 09 OCT 20:32Z
    CiviForm: Trusted-Intermediary IDOR discloses any citizen's name and email
    cvelistv5
  • 09 OCT 20:32Z
    CiviForm: Trusted-Intermediary IDOR discloses any citizen's name and email
    cvelistv5