dbcve.org
Improper Access ControlWeakness · CWE-284

CVE-2026-3111

MEDIUM · 6.9 CVSS v4.0 Published 2026-03-16
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
78/100
Remediation priority · High
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Insecure Direct Object Reference (IDOR) vulnerability in Campus Educativa specifically at the endpoint '/archivos/usuarios/[ID]/[username]/thumb_AAxAA.jpg' (translated as 80x90 and 40x45). Successful exploitation of this vulnerability could allow an unauthenticated attacker to access the profile photos of all users via a manipulated URL, enabling them to collect user photos en masse. This could lead to these photos being used maliciously to impersonate identities, perform social engineering, link identities across platforms using facial recognition, or even carry out doxxing.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

IDOR vulnerability in Campus Educativa allows unauthenticated access to all user profile photos via manipulated URLs at /archivos/usuarios/[ID]/[username]/thumb_AAxAA.jpg (80x90 and 40x45 thumbnails). Attackers can enumerate user IDs to harvest photos en masse for identity theft, social engineering, or doxxing.

MitigationImplement proper authorization checks ensuring users can only access their own profile photos, and require authentication for photo retrieval endpoints.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
Authentication
X
User interaction
None
Scope
X

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Confirm Campus Educativa deployment
    Identify if the web application running is Campus Educativa by checking application banners, headers, or footer/about pages for the product name
    Affected if The application is Campus Educativa and hosts user profile photos at the /archivos/usuarios/ path structure
  2. Test unauthenticated access to photo endpoint
    Attempt to access /archivos/usuarios/1/admin/thumb_80x90.jpg or /archivos/usuarios/1/admin/thumb_40x45.jpg directly via HTTP request without providing any authentication credentials
    Affected if The endpoint returns the image file without requiring login or session cookies
  3. Verify IDOR via user ID manipulation
    Access the same thumbnail path with incrementing user IDs (e.g., /archivos/usuarios/2/user2/thumb_80x90.jpg, /archivos/usuarios/3/user3/thumb_80x90.jpg) and confirm each returns a valid profile photo
    Affected if Different user IDs return different profile photos without authorization checks, indicating the IDOR flaw is present
  4. Check for authorization on thumbnail retrieval
    Compare requests with valid authenticated session versus unauthenticated request to the same /archivos/usuarios/[ID]/[username]/thumb_AAxAA.jpg URL - both should return identical responses if authorization is missing
    Affected if Unauthenticated requests successfully retrieve photos that belong to other users, confirming the IDOR vulnerability

If Campus Educativa is deployed and the /archivos/usuarios/[ID]/[username]/thumb_AAxAA.jpg endpoint returns profile photos without authentication or authorization checks, the environment is affected by CVE-2026-3111.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Implement proper authorization checks ensuring users can only access their own profile photos, and require authentication for photo retrieval endpoints.

Have this fixed Scoped from the published advisory
  • Consultation3.0 h
  • Implementation6.0 h
  • Testing3.0 h
  • Review / QA2.0 h
14.0 hours of engineering $2,490
Get help mitigating

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,984.

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2026-3111 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.

Get it on GitHub Scan in the browser

References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-3111 in production — separate from our analysis above.

No notes yet

Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.

What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data