CVE-2026-116486

Name	CVE-2026-116486
Description	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.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
objenesis (PTS)	bookworm	3.3-3	vulnerable
	trixie	3.4-2	vulnerable
	forky, sid	3.6-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
objenesis	source	(unstable)	3.6-1

Notes

https://github.com/easymock/objenesis/security/advisories/GHSA-743r-26gf-97ff
Fixed by: https://github.com/easymock/objenesis/commit/40f90f435a06b16af74a7398f0007faeaa52c00c (3.6)