CVE-2026-116486
Objenesis before 3.6 contains a type confusion vulnerability that allows code in one class loader to substitute objects into another by exploiting instantiator caching keyed on class name. When a shared ObjenesisStd instance caches instantiators by clazz.getName() in ObjenesisBase.getInstantiatorOf(), same-named classes collide, causing newInstance() to return wrong-class objects and ClassCastException failures.
- CVSS 4.0
- 2.0
CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N - CVSS 3.1
- 4.5
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L - CWE
- CWE-386
- Published
- Modified
- Record from
- the NVD, synced
References
- https://github.com/easymock/objenesis
- https://github.com/easymock/objenesis/blob/fb36e5c377ed1bf57a18386fa79d2eed4ddfcfac/main/src/main/java/org/objenesis/ObjenesisBase.java#L92-L95
- https://github.com/easymock/objenesis/commit/40f90f435a06b16af74a7398f0007faeaa52c00c
- https://github.com/easymock/objenesis/security/advisories/GHSA-743r-26gf-97ff
- https://www.vulncheck.com/advisories/objenesis-before-3.6-type-confusion-via-class-name-instantiator-cache