Security readout for executives and security teams
Plain-English summary
CVE-2026-1106 is an improper authorization issue in Chamilo LMS legal consent handling. An authenticated remote user may manipulate a userId value so the application performs deleteLegal actions for another user. The business risk is unauthorized tampering with consent records and some service disruption. Public proof-of-concept material is referenced, but active exploitation is not confirmed by KEV or the provided sources.
Executive priority
Treat this as a medium-priority issue unless the affected beta version is internet-facing or used with many untrusted accounts. Prioritize removing beta software from production, limiting access, and monitoring consent-record integrity. Escalate if your environment relies on legal consent records for compliance workflows.
Technical view
The issue affects Chamilo LMS up to 2.0.0 Beta 1, specifically src/CoreBundle/Controller/SocialController.php deleteLegal in the Legal Consent Handler. VulDB describes userId manipulation causing improper authorization. CVSS v2 is 5.5: network reachable, low complexity, authenticated, partial integrity and availability impact, no confidentiality impact. Mapped weaknesses are CWE-266 and CWE-285.
Likely exposure
Exposure is most likely where Chamilo LMS 2.0.0 Beta 1 or earlier beta code is reachable by authenticated users. The CVSS vector requires authentication, so anonymous internet exposure alone is not enough. Systems with broad self-registration or many low-trust accounts have higher practical risk.
Exploitation context
The source bundle says an exploit has been released publicly and may be used for attacks. However, CISA KEV status is false, and no cited source confirms active exploitation. Vendor contact reportedly received no response, and no official fix is identified in the provided sources.
Researcher notes
Evidence is mainly from CVE/VulDB records and a public exploit reference. No vendor patch, workaround, or active exploitation confirmation is provided. Validate authorization boundaries around deleteLegal without using public exploit material operationally. Focus on authenticated IDOR-style access control failure and integrity impact to legal consent data.
Mitigation direction
- Inventory Chamilo LMS deployments and identify any 2.0.0 Beta 1 usage.
- Avoid running beta Chamilo LMS in production if possible.
- Restrict access to Chamilo LMS to trusted authenticated users.
- Review vendor channels for an official fix or advisory.
- Monitor legal consent changes for unexpected userId-related activity.
- Limit account creation and privileges for untrusted users.
Validation and detection
- Confirm the deployed Chamilo LMS version and branch.
- Check whether SocialController.php includes the deleteLegal function.
- Review access logs for unusual legal consent delete requests.
- Audit legal consent records for unexpected deletions or changes.
- Verify whether only authorized users can affect their own consent data.
- Track CVE and VulDB entries for updated remediation guidance.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-266: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCWE-285: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-1106 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.5 (2.0)
- Known Exploited
- No
- Published
Vector: AV:N/AC:L/Au:S/C:N/I:P/A:P/E:POC/RL:ND/RC:UR
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
AV:N/AC:L/Au:S/C:N/I:P/A:P/E:POC/RL:ND/RC:UR84.9Primary CVE scoreVulnerability scoring details
Base CVSS 2.0 score
5.5MediumVector: AV:N/AC:L/Au:S/C:N/I:P/A:P/E:POC/RL:ND/RC:UR
Source materials
- CVE List V5 sourceCVE List V5
- VDB-341698 | Chamilo LMS Legal Consent SocialController.php deleteLegal improper authorizationCVE reference · vdb-entry, technical-description
- VDB-341698 | CTI Indicators (IOB, IOC, TTP, IOA)CVE reference · signature, permissions-required
- Submit #731510 | Chamilo LMS <= v2.0.0 Beta 1 SocialController IDOR - Legal Consent Data ManipulatCVE reference · third-party-advisory
- https://note-hxlab.wetolink.com/share/w92t1Q0a74GjCVE reference · exploit
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Incorrect Privilege Assignment
Incorrect Privilege Assignment represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
Improper Authorization
Improper Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.