CVE-2025-2967 — concrete5/concrete5
LOWCVE-2025-2967 is a low-severity (CVSS 3.5) vulnerability in concrete5/concrete5. No vendor fix is recorded yet; mitigation options are listed below.
ConcreteCMS Cross-Site Scripting (XSS) via HTML Block Text Field
Real-World Exposure
concrete5/concrete5Real-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
A vulnerability was found in ConcreteCMS up to 9.3.9. It has been classified as problematic. This affects the function Save of the component HTML Block Handler. The manipulation of the argument content leads to HTML injection. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | concrete5/concrete5 | all versions | No fix |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for concrete5/concrete5, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Remediation status
No patched version of concrete5/concrete5 has shipped for CVE-2025-2967 yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.
Mitigate without a patch
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-2025-2967 can be triaged on real exposure rather than presence alone.
Tailored to CVE-2025-2967. 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-2025-2967 in your dependencies?
O3 Security finds CVE-2025-2967 across Packagist dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.