CVE-2026-9639
Last modified
CVE-2026-9639 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Nil-pointer dereference in CreateCustomVolumeFromBackup in LXD up to version 6.8 and 5.21 on Linux allows an authenticated user with can_create_storage_volumes permissions to cause a denial of service via a specially crafted custom-volume backup tarball that omits the expires_at snapshot field.. EPSS estimates a 0.38% chance of exploitation in the next 30 days.
Description
Nil-pointer dereference in CreateCustomVolumeFromBackup in LXD up to version 6.8 and 5.21 on Linux allows an authenticated user with can_create_storage_volumes permissions to cause a denial of service via a specially crafted custom-volume backup tarball that omits the expires_at snapshot field.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Canonical | Lxd | >= 5.0.0, < 5.21.5 |
| Canonical | Lxd | >= 6.0, < 6.9 |
References
- https://github.com/canonical/lxd/pull/18320Issue Tracking, Patch
- https://github.com/canonical/lxd/pull/18390Issue Tracking, Patch
- https://github.com/canonical/lxd/security/advisories/GHSA-j93m-3j9p-m5m8Exploit, Patch, Vendor Advisory
- https://github.com/canonical/lxd/security/advisories/GHSA-j93m-3j9p-m5m8Exploit, Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-9639?
How severe is CVE-2026-9639?
How do I fix CVE-2026-9639?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-9629The Canvas plugin for WordPress is vulnerable to Stored Cros…6.4
- CVE-2026-9631A vulnerability was detected in UTT HiPER 1250GW up to 3.2.7…8.8
- CVE-2026-9632A flaw has been found in UTT HiPER 1250GW up to 3.2.7-210907…8.8
- CVE-2026-9635The WP Shortcode by MyThemeShop plugin for WordPress is vuln…6.4
- CVE-2026-9636A security issue exists within CompactLogix® 5380, ControlLo…8.2
- CVE-2026-9638Crypt::PBKDF2 versions before 0.261630 for Perl generate ins…7.5
- CVE-2026-9640A privilege escalation vulnerability exists in LXD from 6.0 …7.2
- CVE-2026-9641Crypt::PBKDF2 versions before 0.261630 for Perl have a weak …5.3
- CVE-2026-9642Rejected reason: This CVE ID has been rejected or withdrawn …
- CVE-2026-9643The WP Meta SEO plugin for WordPress is vulnerable to Unauth…7.2
- CVE-2026-9644The LiveSmart Video Chat Live Video Chat plugin for WordPres…6.4
- CVE-2026-9645Exposed methods allow authenticated users to create and exec…9.9
Are you affected by CVE-2026-9639?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST