CVE-2026-61477Libvirt: libvirt: newline injection in network xml dns txt/srv fields allows dnsmasq config directive injection
Updated under an hour ago ()
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It affects Red Hat Enterprise Linux 10 and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Free account, 1 product
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
- 2.3 LOW (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N
- Weakness (CWE)
- CWE-93
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- redhat
- NVD analysis
- Awaiting Analysis
- Record last updated
- Aug 7, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux | 10 | CNA record |
Red Hat Red Hat Enterprise Linux for NVIDIA 26 redhat:enterprise_linux_nvidia | All versions | CNA record |
References
- https://access.redhat.com/security/cve/CVE-2026-61477vdb-entry, x-refsource-redhat
- https://bugzilla.redhat.com/show_bug.cgi?id=2512066issue-tracking, x-refsource-redhat
- https://gitlab.com/libvirt/libvirt/-/commit/3cfc77963b512d809348fca07f97fe924fac9a05
The CVE record on cve.org NVD's entry
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