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Fencer Vulns
high 8.6

CVE-2026-55848 json

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

published 2026-08-28 2 mo ago modified 2026-09-09 1 mo ago also GHSA-5v29-34h8-v68r , EUVD-2026-68018

cvss
8.6
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 45%
public exploits
0
none known

Summary

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.

Patch / fix

  • maven org.mapfish.print:print-lib 3.28.30, 3.30.32, 3.33.16, 4.0.5
  • maven org.mapfish:print.print-servlet 3.28.30
  • maven org.mapfish.print:print-servlet 3.30.32, 3.31.24, 3.33.16, 4.0.5

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
2 mo ago

Exploit prediction

0.53% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/mapfish/mapfish-print/security/advisories/GHSA-5v29-34h8-v68r referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
GitHub 3.1 8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
maven org.mapfish.print:print-lib
>=3.0.0, <3.28.30
>=3.29.0, <3.30.32
>=3.32.0, <3.33.16
>=3.34.0, <4.0.5
3.28.30
3.30.32
3.33.16
4.0.5
maven org.mapfish:print.print-servlet
>=3.0.0, <3.28.30
3.28.30
maven org.mapfish.print:print-servlet
>=3.29.0, <3.30.32
>=3.31.0, <3.31.24
>=3.32.0, <3.33.16
>=3.34.0, <4.0.5
3.30.32
3.31.24
3.33.16
4.0.5

Affected products

  • mapfish mapfish-print
  • mapfish org.mapfish.print.print-lib
  • mapfish org.mapfish.print.print-servlet

Classification

Weakness
  • CWE-611 Improper Restriction of XML External Entity Reference

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.