GHSA-453r-g2pg-cxxq · 深刻度： high · エコシステム： go — Local Incus UI web server vulnerable to nuthentication bypass
Incus is a system container and virtual machine manager. Prior to version 6.23.0, the web server spawned by `incus webui` incorrectly validates the authentication token such that an invalid value will be accepted. `incus webui` runs a local web server on a random localhost port. For authentication, it provides the user with a URL containing an authentication token. When accessed with that token, Incus creates a cookie persisting that token without needing to include it in subsequent HTTP requests. While the Incus client correctly validates the value of the cookie, it does not correctly validate the token when passed int the URL. This allows for an attacker able to locate and talk to the temporary web server on localhost to have as much access to Incus as the user who ran `incus webui`. This can lead to privilege escalation by another local user or an access to the user's Incus instances and possibly system resources by a remote attack able to trick the local user into interacting with the Incus UI web server. Version 6.23.0 patches the issue.
総合評価: CVE-2026-33898 は中リスク（44.7/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 0.35%、26 パーセンタイル） 推奨対応: 影響資産を整理し、修補計画に組み込んでください。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置（高いほど相対的に深刻）を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ（新 − 旧） |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.02% | 0.35% | +0.33% |
| 2 | 2026-04-21 | 0.06% | 0.02% | -0.04% |
| 3 | 2026-03-27 | — | 0.06% | — |
EPSS の全履歴 （全 3 件）
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 8.8 | 3.1 | HIGH |
|
2.8 | 5.9 | [email protected] |
GHSA-453r-g2pg-cxxq · 深刻度： high · エコシステム： go — Local Incus UI web server vulnerable to nuthentication bypass
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
unimportant | CVE-2026-33898 unimportant priority: Debian including 1 source packages (incus), 3 status rows across 3 suites (forky, sid, trixie): resolved 2, open 1. | https://security-tracker.debian.org/tracker/CVE-2026-33898 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2026-33898 |
ubuntu
|
medium | CVE-2026-33898 medium priority: Ubuntu including 2 source packages (incus, lxd), 11 status rows across 7 suites (bionic, focal, jammy, noble, questing, upstream, xenial): DNE 4, needs-triage 4, not-affected 3. | https://ubuntu.com/security/CVE-2026-33898 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| linuxcontainers | incus | < 6.23.0 | cpe:2.3:a:linuxcontainers:incus:*:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| https://github.com/lxc/incus/security/advisories/GHSA-453r-g2pg-cxxq | Vendor Advisory |