CVE-2025-31129 – io.jooby:jooby-pac4j

Package

Manager: maven
Name: io.jooby:jooby-pac4j
Vulnerable Version: >=0 <2.17.0 || >=3.0.0.m1 <3.7.0

Severity

Level: High

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

EPSS: 0.00082 pctl0.24829

Details

jooby-pac4j: deserialization of untrusted data ### Impact Versions after 2.x and before 3.x of io.jooby:jooby-pac4j can cause deserialization of untrusted data ### Patches - 2.17.0 (2.x) - 3.7.0 (3.x) ### Workarounds - Not using io.jooby:jooby-pac4j until it gets patches. - Check what values you put/save on session ### References Version 2.x: https://github.com/jooby-project/jooby/blob/v2.x/modules/jooby-pac4j/src/main/java/io/jooby/internal/pac4j/SessionStoreImpl.java#L39-L45 Version 3.x: https://github.com/jooby-project/jooby/blob/v3.6.1/modules/jooby-pac4j/src/main/java/io/jooby/internal/pac4j/SessionStoreImpl.java#L77-L84 ### Cause In module pac4j io.jooby.internal.pac4j.SessionStoreImpl#get , it is used to handle sessions , and trying to get key value. In strToObject function ,it's trying to deserialize value when value starts with "b64~" , which might cause deserialization of untrusted data. [modules/jooby-pac4j/src/main/java/io/jooby/internal/pac4j/SessionStoreImpl.java](https://github.com/jooby-project/jooby/blob/v3.6.1/modules/jooby-pac4j/src/main/java/io/jooby/internal/pac4j/SessionStoreImpl.java#L77-L84) Here's a small demo using SessionStoreImpl#get to handle sessions ,and user can pass parameters.  And following below is exploiting successfully(execute calculator) 

Metadata

Created: 2025-04-01T14:19:43Z
Modified: 2025-04-01T14:19:43Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/04/GHSA-7c5v-895v-w4q5/GHSA-7c5v-895v-w4q5.json
CWE IDs: ["CWE-502"]
Alternative ID: GHSA-7c5v-895v-w4q5
Finding: F096
Auto approve: 1