CVE-2026-29204 (GCVE-0-2026-29204)

Vulnerability from cvelistv5 – Published: 2026-05-12 17:46 – Updated: 2026-05-12 21:57
VLAI
Summary
Insufficient ownership check in `clientarea.php` allows an authenticated client area user to submit requests using another user’s `addonId` without any ownership validation leading to unauthorized access to the victim's account.
Severity
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CWE
  • CWE-639 - Insecure Direct Object Reference (IDOR)
Assigner
References
Impacted products
Vendor Product Version
WebPros WHMCS Affected: 7.4.0 , ≤ 18.12.2 (semver)
Affected: 18.13.0 , < 18.13.3 (semver)
Affected: 9.0.0 , < 9.0.4 (semver)
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.