CVE-2026-5704

Name: CVE-2026-5704
Creator: NVD / NIST
Published: 2026-04-06T16:16:42.14+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.43%

Last modified Jun 17, 2026

CVE-2026-5704 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. A flaw was found in tar. A remote attacker could exploit this vulnerability by crafting a malicious archive, leading to hidden file injection with fully attacker-controlled content. EPSS estimates a 0.43% chance of exploitation in the next 30 days.

Description

A flaw was found in tar. A remote attacker could exploit this vulnerability by crafting a malicious archive, leading to hidden file injection with fully attacker-controlled content. This bypasses pre-extraction inspection mechanisms, potentially allowing an attacker to introduce malicious files onto a system without detection.

Metrics

CVSS 3.1

5.5/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

EPSS Probability

0.43%

34.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-434

Affected Software

Vendor	Product	Versions
Gnu	Tar	All versions
Redhat	Hardened Images	All versions
Redhat	Enterprise Linux	6.0
Redhat	Enterprise Linux	7.0
Redhat	Enterprise Linux	8.0
Redhat	Enterprise Linux	9.0
Redhat	Enterprise Linux	10.0

References

https://access.redhat.com/security/cve/CVE-2026-5704Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2455360Exploit, Issue Tracking, Third Party Advisory
http://www.openwall.com/lists/oss-security/2026/04/11/10Exploit, Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2026/04/11/11Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2026/04/12/2Exploit, Mailing List, Third Party Advisory

Timeline

Published: Apr 6, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-5704?

How severe is CVE-2026-5704?

CVE-2026-5704 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.43% probability of exploitation in the next 30 days.

How do I fix CVE-2026-5704?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-5704?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST