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Vulnerability · Published Aug 28, 2026 · Assigned by GitHub_M

CVE-2026-55848mapfish-print: XXE on MapFish Print allows reading arbitrary files of certain types

High 8.6

In plain English

A high-severity XML external entity in mapfish-print from mapfish. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 45% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.6High
Exploit odds (30 days)0.5%top 54.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Mavenorg.mapfish.print:print-lib3.30.32GHSA-5v29-34h8-v68r
Mavenorg.mapfish.print:print-lib3.33.16GHSA-5v29-34h8-v68r
Mavenorg.mapfish.print:print-lib3.28.30GHSA-5v29-34h8-v68r
Mavenorg.mapfish.print:print-lib4.0.5GHSA-5v29-34h8-v68r
Mavenorg.mapfish.print:print-servlet4.0.5GHSA-5v29-34h8-v68r
Mavenorg.mapfish.print:print-servlet3.30.32GHSA-5v29-34h8-v68r
Mavenorg.mapfish.print:print-servlet3.31.24GHSA-5v29-34h8-v68r
Mavenorg.mapfish.print:print-servlet3.33.16GHSA-5v29-34h8-v68r
Mavenorg.mapfish:print.print-servlet3.28.30GHSA-5v29-34h8-v68r

Affected products (as reported)

VendorProductVersions
mapfish mapfish-print >= 3.0.0, < 3.28.30>= 3.29.0, < 3.30.32>= 3.31.0, < 3.31.24>= 3.32.0, < 3.33.16>= 4.0.0, < 4.0.5
mapfish org.mapfish.print.print-lib >= 3.0.0, < 3.28.30>= 3.29.0, < 3.30.32>= 3.31.0, < 3.31.24>= 3.32.0, < 3.33.16>= 4.0.0, < 4.0.5
mapfish org.mapfish.print.print-servlet >= 3.0.0, < 3.28.30>= 3.29.0, < 3.30.32>= 3.31.0, < 3.31.24>= 3.32.0, < 3.33.16>= 4.0.0, < 4.0.5

Weakness: CWE-611 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

References