CVE-2026-116486: easymock objenesis · Symbolic Name not Mapping to Correct Object
Affects easymock objenesisSource CVE Database V5
Not known to be exploited · CVSS 2.0 Low : upgrade to 3.6 when convenient.
Data as of 26 Oct 2026, 16:53 UTC
- Patch
- Available – fixed in 3.6
CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 26 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade objenesis and easymock/objenesis to 3.6.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| easymockobjenesis | Affected
| Fixed in
|
Maveneasymock/objenesispkg:maven/easymock/objenesisOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Upgrade Objenesis to version 3.6 or later, where this type confusion vulnerability is fixed. No other mitigations are indicated.
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.
References
- github.com/easymock/objenesis/commit/40f90f435a06b16af74a7398f0007faeaa52c00c (opens in a new tab)
- github.com/easymock/objenesis/security/advisories/GHSA-743r-26gf-97ff (opens in a new tab)
- github.com/easymock/objenesis/blob/fb36e5c377ed1bf57a18386fa79d2eed4ddfcfac/main/src/main/java/org/objenesis/ObjenesisBase.java (opens in a new tab)
- github.com/easymock/objenesis (opens in a new tab)
- vulncheck.com/advisories/objenesis-before-3.6-type-confusion-via-class-name-instantiator-cache (opens in a new tab)