CRLF Injection Affecting libvirt package, versions <11.0.0-150700.4.27.1


Severity

Recommended
0.0
low
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.16% (6th percentile)

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  • Snyk IDSNYK-SLES157-LIBVIRT-19679073
  • published11 Sept 2026
  • disclosed3 Sept 2026

Introduced: 3 Sep 2026

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

How to fix?

Upgrade SLES:15.7 libvirt to version 11.0.0-150700.4.27.1 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 SLES. See How to fix? for SLES:15.7 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