MapFish Print
CVE-2026-55848
HIGH
GHSA-5v29-34h8-v68r
Severity by source
AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Network-reachable unauthenticated endpoint with no interaction required; scope change from SSRF capability; pure confidentiality impact with no integrity or availability effects.
Primary rating from Vendor (GitHub_M).
CVSS VectorVendor: GitHub_M
Lifecycle Timeline
3DescriptionCVE.org
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.
Articles & Coverage 1
AnalysisAI
Unauthenticated XML External Entity (XXE) injection in MapFish Print's GML layer parser allows remote attackers to read arbitrary server-side files and conduct server-side request forgery (SSRF) via a single crafted HTTP POST to the /api/print3/print endpoint. All 3.x branches prior to 3.28.30, 3.30.32, 3.31.24, and 3.33.16, as well as 4.x prior to 4.0.5, are affected. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No special configuration is required on the target - the /api/print3/print endpoint accepts GML layer URLs by design, and the parser was unprotected in all releases prior to the fix. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 8.6 (AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N) accurately reflects the exploitation profile: the endpoint is internet-reachable where exposed, requires no authentication, and can be fully exploited with a single HTTP POST request and a hosted web server. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade to the patched release corresponding to your active branch: 3.28.30, 3.30.32, 3.31.24, 3.33.16, or 4.0.5. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Immediately isolate MapFish Print instances from untrusted networks and implement Web Application Firewall (WAF) rules to block XXE payloads (deny POST requests to /api/print3/print containing XML external entity declarations); if print functionality is not critical, disable the /api/print3/print endpoint entirely. …
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External POC / Exploit Code
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