{"id":"CVE-2025-31129","aliases":["GHSA-7c5v-895v-w4q5"],"url":"https://o3.security/vulnerability/CVE-2025-31129","summary":"jooby-pac4j: deserialization of untrusted data","details":"### Impact\n\nVersions after 2.x and before 3.x of io.jooby:jooby-pac4j can cause deserialization of untrusted data\n\n### Patches\n\n- 2.17.0 (2.x)\n- 3.7.0 (3.x)\n\n### Workarounds\n\n- Not using io.jooby:jooby-pac4j until it gets patches.\n- Check what values you put/save on session\n\n### References\n\nVersion 2.x:\n\nhttps://github.com/jooby-project/jooby/blob/v2.x/modules/jooby-pac4j/src/main/java/io/jooby/internal/pac4j/SessionStoreImpl.java#L39-L45\n\nVersion 3.x:\nhttps://github.com/jooby-project/jooby/blob/v3.6.1/modules/jooby-pac4j/src/main/java/io/jooby/internal/pac4j/SessionStoreImpl.java#L77-L84\n\n### Cause\n\nIn 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.\n\n[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)\n\nHere's a small demo using SessionStoreImpl#get to handle sessions ,and user can pass parameters.\n\n![屏幕截图 2025-03-25 051325](https://github.com/user-attachments/assets/93039a06-d4f1-458a-8595-736b3fede345)\n\nAnd following below is exploiting successfully(execute calculator)\n\n![屏幕截图 2025-03-24 015128（1）](https://github.com/user-attachments/assets/415cf20c-dda0-4634-83ae-f8fa89677a16)","published":"2025-03-31T19:10:57.599Z","modified":"2026-08-12T15:13:49.377463Z","cvss":{"score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"io.jooby:jooby-pac4j","fixedVersion":"2.17.0"},{"ecosystem":"Maven","name":"io.jooby:jooby-pac4j","fixedVersion":"3.7.0"}],"fix":{"url":"https://github.com/jooby-project/jooby/commit/3e13562cf36d7407813eae464e0f4b598de15692","label":"jooby-project/jooby@3e13562"},"references":[{"type":"WEB","url":"https://github.com/jooby-project/jooby/blob/v2.x/modules/jooby-pac4j/src/main/java/io/jooby/internal/pac4j/SessionStoreImpl.java#L39-L45"},{"type":"WEB","url":"https://github.com/jooby-project/jooby/blob/v3.6.1/modules/jooby-pac4j/src/main/java/io/jooby/internal/pac4j/SessionStoreImpl.java#L77-L84"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/31xxx/CVE-2025-31129.json"},{"type":"ADVISORY","url":"https://github.com/jooby-project/jooby/security/advisories/GHSA-7c5v-895v-w4q5"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-31129"},{"type":"FIX","url":"https://github.com/jooby-project/jooby/commit/3e13562cf36d7407813eae464e0f4b598de15692"},{"type":"PACKAGE","url":"https://github.com/jooby-project/jooby"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T15:13:49.377463Z"}}