CVE-2026-116486
4.5 MEDIUMpublic exploit availablePublished 2026-10-26 · Updated 2026-10-26
AI analysis for this CVE has not been generated yet. Raw NVD data is shown below.
NVD 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.
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
Weaknesses
CWE-386
Public exploit & PoC 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
All 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
Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.
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