Vulnerability in github.com/lxc/incus/v7/cmd/incusd (CVE-2026-48769)
Summary
Vulnerability in github.com/lxc/incus/v7/cmd/incusd (CVE-2026-48769). Successful exploitation can lead to full system takeover. Exploitable via POST /1.0/images. Mitigation: upgrade to 7.2.0 or later.
Original description
The description as published by the source.
Incus is a system container and virtual machine manager. Prior to version 7.2.0, an arbitrary file write exists in the Incus client when a malicious image server returns a crafted Incus-Image-Hash header. This can lead to arbitrary command execution as root on the server. Version 7.2.0 patches the issue.
Source: GitHub Security Advisories (Global) NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-48769 has been found in github.com/lxc/incus/v7/cmd/incusd.
Attackers can target a specific entry point like POST /1.0/images over the network to misuse the product.
Successful exploitation can lead to full system takeover. CVSS score: 9.9/10.
What to do: upgrade github.com/lxc/incus/v7/cmd/incusd to 7.2.0 or later.
If unsure, ask your IT team or search "github.com/lxc/incus/v7/cmd/incusd CVE-2026-48769" on the vendor's site.
CVE-2026-48769 (github.com/lxc/incus/v7/cmd/incusd) — CWE-20 / CVSS v3 9.9
Attack vector: remote (network-reachable) / no user interaction
Attack surface: POST /1.0/images / Alias / Server / direct
Patched: 7.2.0 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-20) exists in github.com/lxc/incus/v7/cmd/incusd. Attackers reach the vulnerable code path via POST /1.0/images.
Check the vendor advisory for the affected versions of github.com/lxc/incus/v7/cmd/incusd. Attack surface: POST /1.0/images / Alias / Server / direct.
Severity: Critical (CVSS 9.9/10). Successful exploitation can lead to full system takeover.
Update to 7.2.0.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual POST /1.0/images requests with malformed payloads or SQL meta-characters. Run grep -r 'github.com/lxc/incus/v7/cmd/incusd' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
grep -r 'github.com/lxc/incus/v7/cmd/incusd' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
github.com/lxc/incus/v7/cmd/incusdを grep し、稼働しているサービス・バージョンを把握する。 -
2Hunt for indicators of compromise detect
grep 'POST /1.0/images' /var/log/nginx/access.log | grep -E '(unusual_payload|sqli_pattern)'アクセスログで
POST /1.0/imagesへの異常なリクエスト (不正な認証ヘッダ・SQLメタ文字)を過去 30〜90日分捜索。WAF/SIEM があれば該当パスのアラート発火履歴を確認。 -
3Apply patch patch
Upgrade github.com/lxc/incus/v7/cmd/incusd to 7.2.0ステージング環境で 7.2.0 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスと、Step 2 で見つけた異常検知の続報チェックを含めること。
-
4Post-deployment verification verify
Replay attack against POST /1.0/images on staging to confirm patch closes the vectorパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番では Step 2 と同じログクエリでアラート再発が無いか継続監視。
Affected packages
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Debian DEBIAN-CVE-2026-48769 incus Fixed in: 6.0.4-2+deb13u8
- Ubuntu UBUNTU-CVE-2026-48769 lxd
References
- advisory github.com
- advisory github.com
- advisory nvd.nist.gov
- package github.com
- web github.com