GHSA-w534-q4xf-h5v2 is a critical-severity (CVSS 9.3) vulnerability in org.mapfish.print:print-lib. A fix is available for org.mapfish.print:print-lib — see the affected versions and patch details below.
XSS in Mapfish Print relating to JSONP support
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
GHSA-w534-q4xf-h5v2 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 379,145 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
org.mapfish.print:print-lib☕org.mapfish.print:print-servlet☕org.mapfish.print:print-standaloneReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.
Description
Impact
A user can use the JSONP support to do a Cross-site scripting.
Patches
Use version >= 3.24
Workarounds
No
References
- https://github.com/mapfish/mapfish-print/pull/1397/commits/89155f2506b9cee822e15ce60ccae390a1419d5e
- https://cwe.mitre.org/data/definitions/79.html
For more information
If you have any questions or comments about this advisory Comment the pull request: https://github.com/mapfish/mapfish-print/pull/1397
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | org.mapfish.print:print-lib | all versions | 3.24org.mapfish.print:print-lib:3.24 |
| ☕Maven | org.mapfish.print:print-servlet | all versions | 3.24org.mapfish.print:print-servlet:3.24 |
| ☕Maven | org.mapfish.print:print-standalone | all versions | 3.24org.mapfish.print:print-standalone:3.24 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.mapfish.print:print-lib, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.mapfish.print:print-lib to 3.24 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-w534-q4xf-h5v2 is resolved across your whole dependency graph.
Workarounds
Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-w534-q4xf-h5v2 can be triaged on real exposure rather than presence alone.
Tailored to GHSA-w534-q4xf-h5v2. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-w534-q4xf-h5v2 in your dependencies?
O3 Security finds GHSA-w534-q4xf-h5v2 across Maven dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.