CVE-2026-23496 is a medium-severity (CVSS 5.4) CWE-284 vulnerability in pimcore/web2print-tools-bundle. A fix is available for pimcore/web2print-tools-bundle — see the affected versions and patch details below.
Pimcore Web2Print Tools Bundle "Favourite Output Channel Configuration" Missing Function Level Authorization
Exploitation Status
Proof-of-concept exploit code exists
- CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
Exploitation and automatability from CISA’s SSVC triage for CVE-2026-23496.
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
How urgent is this, really
CVE-2026-23496 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 378,156 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
pimcore/web2print-tools-bundle🐘pimcore/web2print-tools-bundleReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.
Description
Summary
The application fails to enforce proper server-side authorization checks on the API endpoint responsible for managing "Favourite Output Channel Configurations." Testing revealed that an authenticated backend user without explicitely lacking permissions for this feature was still able to successfully invoke the endpoint and modify or retrieve these configurations. This violates the principle of least privilege and constitutes a classic example of Broken Access Control (OWASP Top 10 A01:2021). Because authorization is not validated at the function level, any authenticated user can perform actions intended only for privileged roles, leading to horizontal or vertical privilege escalation.
Detail
The backend user without permission was still able to list, create, update "Favourite Output Channel Configuration" item
Step to Reproduce the issue
login as Admin (full permission) and clicked "Favourite Output Channel Configurations" <img width="949" height="860" alt="Screenshot 2025-12-10 at 8 52 55 PM" src="https://github.com/user-attachments/assets/86554e7e-86c1-469f-b09b-5f360c4507dd" /> Then, captured and saved the request: -List API <img width="923" height="662" alt="Screenshot 2025-12-10 at 8 55 49 PM" src="https://github.com/user-attachments/assets/21d90540-7a6b-4555-bbc0-ce74284dda67" /> -Create API <img width="1245" height="783" alt="Screenshot 2025-12-10 at 9 01 46 PM" src="https://github.com/user-attachments/assets/38b5a771-ad17-459b-84e1-fe83c6d609a1" /> -Update API <img width="1244" height="726" alt="Screenshot 2025-12-10 at 9 03 00 PM" src="https://github.com/user-attachments/assets/2167d48e-8941-4fff-be07-3050ffa7ad35" />
Next, login a backend user with no permission <img width="1219" height="744" alt="Screenshot 2025-12-10 at 9 06 12 PM" src="https://github.com/user-attachments/assets/6b3981bc-4fe0-4c6e-8a5b-24523679ad4c" /> The copy the "Cookie" and "X-Pimcore-Csrf-Token" <img width="1902" height="971" alt="Screenshot 2025-12-10 at 9 10 47 PM" src="https://github.com/user-attachments/assets/4f48f27a-6149-49fb-9209-220c2e62c25f" /> After that, pasted the copied "Cookie" and "X-Pimcore-Csrf-Token" to captured request
- List API <img width="1135" height="660" alt="Screenshot 2025-12-10 at 9 14 47 PM" src="https://github.com/user-attachments/assets/32ebdad2-771a-41dd-a4e6-13e8cb8ef201" />
- Create API <img width="1140" height="697" alt="Screenshot 2025-12-10 at 9 16 43 PM" src="https://github.com/user-attachments/assets/25d5b7a9-5e96-4e7c-94cf-3c9c3d31e7f1" />
- Update API <img width="1144" height="722" alt="Screenshot 2025-12-10 at 9 19 00 PM" src="https://github.com/user-attachments/assets/02440595-2e10-44a8-9fb7-8eb8f0aab12a" />
Impact
Successful exploitation allows low-privileged or standard users to view, create, modify that should be restricted to specific administrative or operational roles. Depending on the sensitivity of these configurations (e.g., routing of alerts, reports, or data streams), an attacker could redirect critical outputs, suppress notifications, insert misleading channels, or gain insight into internal workflows. In regulated environments, this may result in compliance violations, operational disruption, or facilitation of further attacks through reconnaissance.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | pimcore/web2print-tools-bundle | ≥ 6.0.0-RC1&&< 6.1.1 | 6.1.1composer require pimcore/web2print-tools-bundle:^6.1.1 |
| 🐘Packagist | pimcore/web2print-tools-bundle | all versions | 5.2.2composer require pimcore/web2print-tools-bundle:^5.2.2 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for pimcore/web2print-tools-bundle, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update pimcore/web2print-tools-bundle to 6.1.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-23496 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2026-23496 can be triaged on real exposure rather than presence alone.
Tailored to CVE-2026-23496. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2026-23496 in your dependencies?
O3 Security finds CVE-2026-23496 across Packagist dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.