CVE-2026-34179
Remote authenticated user can escalate to cluster admin via unvalidated Type in cert update.
Is CVE-2026-34179 being exploited?
Not confirmed. CVE-2026-34179 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.27% probability of exploitation in the next 30 days.
How severe is CVE-2026-34179?
CVE-2026-34179 is rated Critical with a CVSS score of 9.1. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-34179?
Yes. A fix has been recorded for CVE-2026-34179. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-34179 affect?
CVE-2026-34179 affects Canonical LXD 4.12-6.7. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-34179?
Patch when available; upgrade to fixed LXD release.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote attacker can gain cluster-admin privileges by manipulating the certificate Type during PUT/PATCH /1.0/certificates/{fingerprint}.
Immediate action required
- affected>= 4.12.0 and < 5.0.7
- affected>= 5.1.0 and < 5.21.5
- affected>= 6.0.0 and < 6.8.0
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.