CVE-2022-31139 json
No security checking for UnsafeAccess.getInstance() in UnsafeAccessor
published 2022-07-11 4 y ago modified 2026-06-17 4 mo ago also GHSA-cr6p-23cf-w9g9 , EUVD-2022-6324
- cvss
- 5.9
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.2%
- EPSS 1.2% chance of exploitation in 30 days, percentile 67%
- public exploits
- 0
- none known
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.
Patch / fix
- maven io.github.karlatemp:unsafe-accessor 1.7.0
- unsafe_accessor_project unsafe_accessor 1.7.0
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 18 mo ago
Exploit prediction
1.18% chance of exploitation in the next 30 days, higher than 67% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:P/I:N/A:N |
| GitHub | 3.1 | 5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | io.github.karlatemp:unsafe-accessor | >=1.4.0, <1.7.0 |
1.7.0 |
Affected products
- Karlatemp UnsafeAccessor
Classification
References
-
github.com
/Karlatemp/UnsafeAccessor/commit/4ef83000184e8f13239a1ea2847ee401d81585fd
web, patch, third-party-advisory
-
github.com
/Karlatemp/UnsafeAccessor/security/advisories/GHSA-cr6p-23cf-w9g9
web, patch, third-party-advisory
-
github.com
/Karlatemp/UnsafeAccessor/releases/tag/1.7.0
web, release-notes, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2022-31139
advisory
-
github.com
/Karlatemp/UnsafeAccessor
package
Sources
- CVE List CVE-2022-31139
- GitHub Advisory GHSA-cr6p-23cf-w9g9
- NVD CVE-2022-31139
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