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    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.

    Published:Aug 6, 2026
    Last Modified:Aug 8, 2026
    EPS:Aug 7, 2026
    EPSS Score:0.0024
    CVSS Score:2.3

    Affected Products

    Vendor
    Libvirt
    Product
    Libvirt
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Linux For Nvidia 26
    Vendor
    Redhat
    Product
    Enterprise Linux Nvidia

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-15 Command Delimiters
    CAPEC-81 Web Server Logs Tampering

    Related CVEs

    CVE-2026-63623 (CVSS 5.5) — A flaw was found in libvirt. During storage volume clone or convert operations, newly created volume images we…
    CVE-2026-63622 (CVSS 7.8) — A flaw was found in libvirt. A local attacker, specifically a process running as the confined `swtpm` user, co…
    CVE-2015-5160 (CVSS 5.5) — libvirt before 2.2 includes Ceph credentials on the qemu command line when using RADOS Block Device (aka RBD),…
    CVE-2014-3657 (CVSS 5) — The virDomainListPopulate function in conf/domain_conf.c in libvirt before 1.2.9 does not clean up the lock on…
    CVE-2014-3633 (CVSS 5.8) — The qemuDomainGetBlockIoTune function in qemu/qemu_driver.c in libvirt before 1.2.9, when a disk has been hot-…
    CVE-2010-2242 (CVSS 2.1) — Red Hat libvirt 0.2.0 through 0.8.2 creates iptables rules with improper mappings of privileged source ports, …
    CVE-2010-2238 (CVSS 4.4) — Red Hat libvirt, possibly 0.7.2 through 0.8.2, recurses into disk-image backing stores without extracting the …
    CVE-2010-2237 (CVSS 4.4) — Red Hat libvirt, possibly 0.6.1 through 0.8.2, looks up disk backing stores without referring to the user-defi…
    CVE-2010-2239 (CVSS 4.4) — Red Hat libvirt, possibly 0.6.0 through 0.8.2, creates new images without setting the user-defined backing-sto…
    CVE-2009-0036 (CVSS 4.4) — Buffer overflow in the proxyReadClientSocket function in proxy/libvirt_proxy.c in libvirt_proxy 0.5.1 might al…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High