CVE-2026-33542

Incus does not verify combined fingerprint when downloading images from simplestreams servers

CVSS 5.7 MEDIUMEPSS 0.2%CWE-295

Vexday Risk Score

13Baixo

Decisão SSVC (CISA)

Track

Sem sinal de exploração → monitorar

CVSS 5.7EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Ciclo de vida

26 mar 2026Publicada no NVD

Recomendação: Monitorar — sem sinal de exploração no momento.

Incus is a system container and virtual machine manager. Prior to version 6.23.0, a lack of validation of the image fingerprint when downloading from simplestreams image servers opens the door to image cache poisoning and under very narrow circumstances exposes other tenants to running attacker controlled images rather than the expected one. Version 6.23.0 patches the issue.

CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:H/VA:N/SC:L/SI:H/SA:N/E:P

Produtos afetados

lxc · incus

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Referências

https://github.com/lxc/incus/security/advisories/GHSA-p8mm-23gg-jc9r