TI-2022-13183 Aliases CVE-2022-31139 GHSA-cr6p-23cf-w9g9

No security checking for UnsafeAccess.getInstance() in UnsafeAccessor

LOW 35CWE-200Published 2022-07-11 · Updated 2025-04-23

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Information disclosure, Security bypass
Confidentiality · integrity · availability: High · None · None
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-200 and CWE-863.

Summary

UnsafeAccessor (UA) is a bridge to access jdk.internal.misc.Unsafe & sun.misc.Unsafe. Normally, if UA is loaded as a named module, the internal data of UA is protected by JVM and others can only access UA via UA's standard API. The main application can set up `SecurityCheck.AccessLimiter` for UA to limit access to UA. Starting with version 1.4.0 and prior to version 1.7.0, when `SecurityCheck.AccessLimiter` is set up, untrusted code can access UA without limitation, even when UA is loaded as a named module. This issue does not affect those for whom `SecurityCheck.AccessLimiter` is not set up. Version 1.7.0 contains a patch.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.01175 67th percentileScored 2026-11-07

Fix Fixed UnsafeAccessor (Karlatemp): 1.7.0io.github.karlatemp:unsafe-accessor (Maven): 1.7.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Karlatemp	UnsafeAccessor	1.4.0 to before 1.7.0	1.7.0	Patch available	CNA
—	io.github.karlatemp:unsafe-accessor (Maven)	1.4.0 to before 1.7.0	1.7.0	Patch available	GHSA-cr6p-23cf-w9g9

UnsafeAccessor VendorKarlatemp Affected 1.4.0 to before 1.7.0 Fixed in 1.7.0 Patch available CNA
io.github.karlatemp:unsafe-accessor (Maven) Vendor— Affected 1.4.0 to before 1.7.0 Fixed in 1.7.0 Patch available GHSA-cr6p-23cf-w9g9

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:unsafe_accessor_project:unsafe_accessor::::::::	1.4.0 to before 1.7.0	Vulnerable	Unsafe Accessor Project

cpe:2.3:a:unsafe_accessor_project:unsafe_accessor:*:*:*:*:*:*:*:* Versions 1.4.0 to before 1.7.0 Vulnerable ·Unsafe Accessor Project

Remediation

Fix · CNA UnsafeAccessor (Karlatemp) Fixed in 1.7.0
Fix · GHSA-cr6p-23cf-w9g9 io.github.karlatemp:unsafe-accessor (Maven) Fixed in 1.7.0 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2022-31139
2026-10-03 Alias added: GHSA-cr6p-23cf-w9g9

References

Patch 2

Advisory 2

Other 1

https://github.com/Karlatemp/UnsafeAccessor

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences