CVE-2026-55848 mapfish-print: XXE on MapFish Print allows reading arbitrary files of certain types
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-55848?
CVE-2026-55848 is a high-severity vulnerability in mapfish-print, published on 28 Aug 2026.
Official description
mapfish-print is a component of MapFish for printing templated cartographic maps. Prior to 3.28.30, 3.30.32, 3.31.24, 3.33.16, and 4.0.5, MapFish Print accepts an attacker-controlled GML layer url in requests to the /api/print3/print endpoint and fetches XML parsed by core/src/main/java/org/mapfish/print/map/geotools/GmlLayer.java without disabling external entities and external DTDs. A remote XML document and DTD can expand a local file entity, and the resulting content can be exposed through the GML parsing and error path. This allows unauthenticated attackers to read files such as operating-system account data, Kubernetes service-account tokens, and certificates. Replacing the file entity target with an internal HTTP endpoint also permits server-side request forgery. This issue is fixed in versions 3.28.30, 3.30.32, 3.31.24, 3.33.16, and 4.0.5.
Weakness: CWE-611
Which versions are affected by CVE-2026-55848?
18 open source packages ship an affected version, including org.mapfish.print:print-lib, org.mapfish.print:print-servlet and org.mapfish:print.print-servlet.
| Package | Affected | Fixed in |
|---|---|---|
org.mapfish.print:print-lib Maven | From 3.0.0 | 3.28.30 |
org.mapfish.print:print-lib Maven | From 3.0.0 | 3.28.30 |
org.mapfish.print:print-lib Maven | From 3.29.0 | 3.30.32 |
org.mapfish.print:print-lib Maven | From 3.29.0 | 3.30.32 |
org.mapfish.print:print-lib Maven | From 3.32.0 | 3.33.16 |
org.mapfish.print:print-lib Maven | From 3.32.0 | 3.33.16 |
12 more packages
org.mapfish.print:print-lib Maven | From 3.34.0 | 4.0.5 |
org.mapfish.print:print-lib Maven | From 3.34.0 | 4.0.5 |
org.mapfish.print:print-servlet Maven | From 3.29.0 | 3.30.32 |
org.mapfish.print:print-servlet Maven | From 3.29.0 | 3.30.32 |
org.mapfish.print:print-servlet Maven | From 3.31.0 | 3.31.24 |
org.mapfish.print:print-servlet Maven | From 3.31.0 | 3.31.24 |
org.mapfish.print:print-servlet Maven | From 3.32.0 | 3.33.16 |
org.mapfish.print:print-servlet Maven | From 3.32.0 | 3.33.16 |
org.mapfish.print:print-servlet Maven | From 3.34.0 | 4.0.5 |
org.mapfish.print:print-servlet Maven | From 3.34.0 | 4.0.5 |
org.mapfish:print.print-servlet Maven | From 3.0.0 | 3.28.30 |
org.mapfish:print.print-servlet Maven | From 3.0.0 | 3.28.30 |
How do I fix CVE-2026-55848?
Upgrade org.mapfish.print:print-lib to a fixed version for your release line: 3.28.30, 3.30.32, 3.33.16 or 4.0.5.
Is CVE-2026-55848 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-55848 exists.
Sources
Also known as GHSA-5v29-34h8-v68r.