CVE-2026-5704: Unrestricted Upload of File with Dangerous Type in Red Hat Red Hat Enterprise Linux 10
CVE-2026-5704 is a vulnerability in the tar utility on Red Hat Enterprise Linux 10 that allows a remote attacker to craft a malicious archive to inject hidden files with attacker-controlled content. This bypasses pre-extraction inspection mechanisms, potentially enabling malicious files to be introduced without detection. The vulnerability has a medium severity score of 5. 0 and does not impact confidentiality or availability but can impact integrity. There is no explicit vendor advisory statement on patch availability or mitigation in the provided data. No known exploits are reported in the wild.
AI Analysis
Technical Summary
This vulnerability in the tar utility on Red Hat Enterprise Linux 10 involves unrestricted upload of files with dangerous types via crafted archives. An attacker with local privileges and user interaction can bypass pre-extraction inspection by embedding hidden files with fully attacker-controlled content. The CVSS 3.1 vector (AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N) indicates local attack vector, low attack complexity, low privileges required, user interaction needed, unchanged scope, no confidentiality or availability impact, but high integrity impact. No patch or official remediation level is provided in the vendor advisory content linked.
Potential Impact
The vulnerability allows an attacker to inject malicious files into the system by bypassing inspection mechanisms during archive extraction, potentially compromising system integrity. There is no impact on confidentiality or availability. The attack requires local access with some privileges and user interaction, limiting remote exploitation. No known active exploitation has been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the Red Hat advisory at https://access.redhat.com/security/cve/CVE-2026-5704 for current remediation guidance. Until an official fix is available, restrict local user permissions to limit archive extraction capabilities and monitor for suspicious archive usage. Follow vendor updates closely for patches or workarounds.
CVE-2026-5704: Unrestricted Upload of File with Dangerous Type in Red Hat Red Hat Enterprise Linux 10
Description
CVE-2026-5704 is a vulnerability in the tar utility on Red Hat Enterprise Linux 10 that allows a remote attacker to craft a malicious archive to inject hidden files with attacker-controlled content. This bypasses pre-extraction inspection mechanisms, potentially enabling malicious files to be introduced without detection. The vulnerability has a medium severity score of 5. 0 and does not impact confidentiality or availability but can impact integrity. There is no explicit vendor advisory statement on patch availability or mitigation in the provided data. No known exploits are reported in the wild.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in the tar utility on Red Hat Enterprise Linux 10 involves unrestricted upload of files with dangerous types via crafted archives. An attacker with local privileges and user interaction can bypass pre-extraction inspection by embedding hidden files with fully attacker-controlled content. The CVSS 3.1 vector (AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N) indicates local attack vector, low attack complexity, low privileges required, user interaction needed, unchanged scope, no confidentiality or availability impact, but high integrity impact. No patch or official remediation level is provided in the vendor advisory content linked.
Potential Impact
The vulnerability allows an attacker to inject malicious files into the system by bypassing inspection mechanisms during archive extraction, potentially compromising system integrity. There is no impact on confidentiality or availability. The attack requires local access with some privileges and user interaction, limiting remote exploitation. No known active exploitation has been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the Red Hat advisory at https://access.redhat.com/security/cve/CVE-2026-5704 for current remediation guidance. Until an official fix is available, restrict local user permissions to limit archive extraction capabilities and monitor for suspicious archive usage. Follow vendor updates closely for patches or workarounds.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- redhat
- Date Reserved
- 2026-04-06T13:37:17.528Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2026-5704","vendor":"Red Hat"}]
Threat ID: 69d3d1a30a160ebd92c13132
Added to database: 4/6/2026, 3:30:43 PM
Last enriched: 4/6/2026, 3:46:05 PM
Last updated: 4/6/2026, 5:14:37 PM
Views: 3
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.