How severe is CVE-2026-5704?

CVE-2026-5704 has a CVSS 3.x base score of 5.0, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2026-5704 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-5704?

CVE-2026-5704 primarily affects Redhat Hardened Images. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-5704?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-5704 have an EU (EUVD) identifier?

Yes. CVE-2026-5704 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19317.

When was CVE-2026-5704 published?

CVE-2026-5704 was published on 2026-04-06 and last updated on 2026-06-17.

CVE-2026-5704

CVE-2026-5704 is a medium-severity vulnerability in Redhat Hardened Images with a CVSS 3.x base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-434.

Key facts

Severity: Medium (CVSS 3.x base score 5.0)
EPSS exploit prediction: 0% (35th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-19317
Weakness: CWE-434
Affected product: Redhat Hardened Images
Published: 2026-04-06
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-5704?: 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.
How severe is CVE-2026-5704?: CVE-2026-5704 has a CVSS 3.x base score of 5.0, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2026-5704 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-5704?: CVE-2026-5704 primarily affects Redhat Hardened Images. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-5704?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-5704 have an EU (EUVD) identifier?: Yes. CVE-2026-5704 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19317.
When was CVE-2026-5704 published?: CVE-2026-5704 was published on 2026-04-06 and last updated on 2026-06-17.

References

Affected products (7)

cpe:2.3:a:gnu:tar:-:*:*:*:*:*:*:*
cpe:2.3:a:redhat:hardened_images:-:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*

More vulnerabilities in Redhat Hardened Images

CVE-2026-0966 — High (CVSS 8.2): A flaw was found in libssh. The API function `ssh_get_hexa()` is vulnerable to a denial of service when processing…
CVE-2026-48864 — High (CVSS 7.8): A flaw was found in libsolv. This heap buffer overflow occurs during the decompression of attacker-controlled…
CVE-2026-6846 — High (CVSS 7.8): A flaw was found in binutils. A heap-buffer-overflow vulnerability exists when processing a specially crafted XCOFF…
CVE-2025-14821 — High (CVSS 7.8): A flaw was found in libssh. This vulnerability allows local man-in-the-middle attacks, security downgrades of SSH…
CVE-2026-4775 — High (CVSS 7.8): A flaw was found in the libtiff library. A remote attacker could exploit a signed integer overflow vulnerability in the…
CVE-2026-42009 — High (CVSS 7.5): A flaw was found in gnutls. A remote attacker could exploit an issue in the Datagram Transport Layer Security (DTLS)…

All CVEs affecting Redhat Hardened Images →

Other CWE-434 (Unrestricted Upload of File with Dangerous Type) vulnerabilities

CVE-2026-48283 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Unrestricted Upload of File with Dangerous Type…
CVE-2026-48276 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Unrestricted Upload of File with Dangerous Type…
CVE-2026-57700 — Critical (CVSS 10.0): Unrestricted Upload of File with Dangerous Type vulnerability in Daan.Dev OMGF Pro allows Using Malicious Files. This…
CVE-2025-69129 — Critical (CVSS 10.0): Unauthenticated Arbitrary File Upload in WordPress & WooCommerce Scraper Plugin, Import Data from Any Site <= 1.0.7…
CVE-2026-40772 — Critical (CVSS 10.0): Unauthenticated Arbitrary File Upload in GeekyBot <= 1.2.2 versions.
CVE-2026-40412 — Critical (CVSS 10.0): Unrestricted upload of file with dangerous type in Azure Orbital Spatio allows an unauthorized attacker to execute code…

Browse all CWE-434 (Unrestricted Upload of File with Dangerous Type) vulnerabilities →