CVE-2021-28168

Local information disclosure via world-readable temporary files

Published Apr 22, 2021 · Updated Aug 3, 2024

Information disclosure in Eclipse Jersey 2.28 through 2.33 and 3.0.0 through 3.0.1 allows local users to read temporary-file contents. The Utils.createTempFile helper used by FileProvider and FormDataParamValueParamProvider calls File.createTempFile, producing world-readable files in the shared system temporary directory on affected Unix-like systems. Any local account can read security-sensitive content written to those files; the upstream disclosure excludes modern macOS.

CVSS severity6.2
Medium
EPSS probability0.91%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Eclipse Jersey 2.28 through 2.33 and 3.0.0 through 3.0.1 allows local users to read temporary-file contents. The Utils.createTempFile helper used by FileProvider and FormDataParamValueParamProvider calls File.createTempFile, producing world-readable files in the shared system temporary directory on affected Unix-like systems. Any local account can read security-sensitive content written to those files; the upstream disclosure excludes modern macOS.

The record

CVE
CVE-2021-28168
Published
Apr 22, 2021
Updated
Aug 3, 2024
Vendor
The Eclipse Foundation
Product
Eclipse Jersey
Classifications
CWE-379, CWE-378, T1005
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 22, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.28 <unspecified
  2. Affected versionversion=3.0.0 <unspecified
  3. Affected versionversion=unspecified <=2.33
  4. Affected versionversion=unspecified <=3.0.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

The Eclipse Foundation · Eclipse Jerseyversion=2.28 <unspecified; version=3.0.0 <unspecified; version=unspecified <=2.33; version=unspecified <=3.0.1

Published CVSS scores

6.2GitHub Advisory DatabaseCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-379Creation of Temporary File in Directory with Insecure Permissions
CWE-378Creation of Temporary File With Insecure Permissions
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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