Vulnerability in Red Hat Enterprise Linux 10
CVE-2026-61477
An injection vulnerability was found in libvirt's virtual network driver. The network XML parser does not strip newline characters from DNS TXT record value attributes and SRV record domain/target attributes. These values are written verbatim into the dnsmasq configuration file generated by the network driver, allowing a user with permission to define virtual networks to inject arbitrary dnsmasq configuration directives such as dhcp-script, leading to arbitrary command execution as root.
Vulnerability class: CRLF Injection
EPSS: 0.002 (5.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 2.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N.
Affected products
Weakness classification (CWE)
References
- secalert@redhat.com (x_refsource_REDHAT, vdb-entry)
- secalert@redhat.com (x_refsource_REDHAT, issue-tracking)
- secalert@redhat.com
Frequently asked questions
- What is CVE-2026-61477?
- CVE-2026-61477 is a low-severity vulnerability in Red Hat Enterprise Linux 10, classified under CRLF Injection. CVSS score: 2.3/10. Published 2026-08-07.
- How severe is CVE-2026-61477?
- Low severity. CVSS v3 base score is 2.3 out of 10.