All versions of the package io.pebbletemplates:pebble are vulnerable to External Control of File Name or Path via the include tag. A high privileged attacker can access sensitive local files by crafting malicious notification templates that leverage this tag to include files like /etc/passwd or /proc/1/environ.

 Workaround

This vulnerability can be mitigated by disabling the include macro in Pebble Templates:

java
new PebbleEngine.Builder()
            .registerExtensionCustomizer(new DisallowExtensionCustomizerBuilder()
                    .disallowedTokenParserTags(List.of("include"))
                    .build())
            .build();

AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N

CWE-73

https://github.com/PebbleTemplates/pebble/issues/680

https://github.com/PebbleTemplates/pebble/issues/688

https://pebbletemplates.io/wiki/tag/include

https://security.snyk.io/vuln/SNYK-JAVA-IOPEBBLETEMPLATES-8745594