Live Exposure Defense: From CVE to Confirmed Exposure in 12 Hours – See more

Back
New CVE Detected

CVE-2026-82655 – Pre-Authentication Blind SQL Injection – Admidio ≤ 5.0.11

Be the first to know when new zero-days emerge:

Subscribe to Email Alerts
Subscribe to RSS Feed

Summary

CVE-2026-82655 is a pre-authentication blind SQL injection vulnerability in Admidio, the open-source membership/user management platform used by organizations and clubs to run their websites. The flaw resides in the relation_type_list parameter of /modules/groups-roles/lists_show.php and allows unauthenticated remote attackers to extract entire database contents, including user password hashes. The issue affects all Admidio versions prior to 5.0.12 and carries a CVSS v3.1 base score of 7.5 (High) / CVSS v4.0 score of 8.7.

Technical details

  • Root cause: The relation_type_list request parameter is concatenated directly into a SQL query (via string implosion) without parameterization or input validation, unlike the neighboring role_list parameter which does validate UUID format.
  • Trigger condition: An attacker can bypass Admidio’s normal authorization checks on lists_show.php by supplying a dummy, format-valid UUID in the role_list field, reaching the vulnerable code path without needing to log in.
  • Attack vector: Network-based, unauthenticated, no user interaction required (blind boolean-based SQL injection).
  • Impact: Full compromise of the underlying database — including extraction of user credentials, password hashes, and personally identifiable information stored by the application.

Affected software

  • Admidio versions 5.0.11 and all earlier releases
  • Fixed in Admidio 5.0.12 and later

Severity

  • CVSS v3.1 Base Score: 7.5 (High)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
  • (A CVSS v4.0 score of 8.7 has also been assigned to this CVE.)

Mitigation and recommended actions

  • Immediate: Upgrade Admidio to version 5.0.12 or later, which parameterizes the affected query and validates the relation_type_list input.
  • If patching is not immediately possible: Restrict or block external network access to /adm_program/modules/groups-roles/lists_show.php at the web server or reverse proxy/WAF layer until the upgrade can be applied; monitor logs for anomalous requests containing SQL metacharacters in the relation_type_list or role_list parameters.
  • Review database logs and user credential stores for signs of prior exploitation, and rotate credentials/password hashes if compromise is suspected.

References

Are you exposed?

Get a free report of your organization’s exposure to this CVE and threat

  • Mapping of all Assets with this Technology
  • Identification of potentially exposed assets to this CVE
  • Confirmation of verified exploitable assets
Get Exposure Report

How IONIX’s External Exposure Management Platform Detects and Validates
Zero-Days to Shrink MTTR

1

Map your entire attack surface (continously)

IONIX uses multi-factor discovery methods, including DNS analysis, certificate mapping, metadata inspection, and more, to automatically map every internet-facing asset across your environment. This includes cloud instances, third-party platforms, shadow IT, and even forgotten infrastructure that traditional tools miss.

2

Monitor for new CVEs

Dozens of threat intel feeds using agentic technology are continuously analyzed to detect the appearance of proof-of-concept code, exploit kits, and indicators of active targeting. IONIX goes further by applying AI to proactively evaluate whether emerging vulnerabilities are likely to be exploited, even before PoCs go public.

3

Identify Potential External Exposures

Not all CVEs matter. IONIX filters vulnerabilities by asking attacker-centric questions: Can it be reached from the internet? Does it require authentication? Is it being exploited in the wild? This dramatically reduces noise and focuses teams on threats that can actually be weaponized.

4

Create Safe, Scalable Exploit Validations

IONIX transforms real-world PoCs into safe, non-intrusive test payloads that can be run in production environments without disruption. These simulations are precisely targeted to the systems that are vulnerable, ensuring rapid validation without unnecessary load.

5

Execute Exploit Validations

By combining context about software stack, versioning, exposure status, and reachability, IONIX ensures that only the right payloads are executed against the right assets, maximizing efficiency and minimizing risk.

6

Drive Fast and Actionable Remediation

Results are routed through integrations with ticketing, SOAR, and SIEM tools. Issues are written in plain language, bundled into remediation clusters, and prioritized based on asset criticality, exploitability, and blast radius. This shortens mean time to remediation (MTTR) and empowers teams to act with confidence.

Are you exposed?

Get a free report of your organization’s exposure to this CVE and threat

  • Mapping of all Assets with this Technology
  • Identification of potentially exposed assets to this CVE
  • Confirmation of verified exploitable assets
Get Exposure Report
Close

Subscribe to Threat Center RSS

Copy/paste the link below into your preferred RSS reader or follow these instructions to subscribe to Slack alerts.

Open RSS feedSlack setup instructions

Close

Get Real-Time CVE Alerts to Your Email

Be the first to know when new zero-days emerge