CRLF Injection Affecting libvirt package, versions <11.3.0-3+deb13u3


Severity

Recommended
0.0
low
0
10

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Threat Intelligence

EPSS
0.16% (6th percentile)

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  • Snyk IDSNYK-ECHOLATEST-LIBVIRT-18579111
  • published7 Aug 2026
  • disclosed7 Aug 2026

Introduced: 7 Aug 2026

CVE-2026-61477  (opens in a new tab)
CWE-93  (opens in a new tab)

How to fix?

Upgrade Echo:latest libvirt to version 11.3.0-3+deb13u3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libvirt package and not the libvirt package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1