Privilege Escalation in wger (CVE-2026-46434)
Summary
Vulnerability in wger (CVE-2026-46434). Data can be tampered with by attackers. Exploitable via GET /en/user/.
Original description
The description as published by the source.
Summary
A user with only the gym_trainer permission can deactivate any account in the same gym, including gym_manager and general_gym_manager accounts. The UserDeactivateView grants access to anyone holding any one of gym.manage_gym, gym.manage_gyms, or gym.gym_trainer (OR logic via WgerMultiplePermissionRequiredMixin), and performs no privilege-hierarchy check to prevent a lower-privileged role from disabling a higher-privileged one.
Details
UserDeactivateView (file: wger/core/views/user.py, line 378) is configured with:
permission_required = ('gym.manage_gym', 'gym.manage_gyms', 'gym.gym_trainer')
WgerMultiplePermissionRequiredMixin (file: wger/utils/generic_views.py, line 48) treats this tuple as an OR check -- any single permission is sufficient:
class WgerMultiplePermissionRequiredMixin(PermissionRequiredMixin):
def has_permission(self):
for permission in self.get_permission_required():
if self.request.user.has_perm(permission):
return True # <-- ANY one permission is enough
return False
The dispatch() method only verifies same-gym membership:
def dispatch(self, request, *args, **kwargs):
edit_user = get_object_or_404(User, pk=self.kwargs['pk'])
if (
request.user.has_perm('gym.manage_gym')
or request.user.has_perm('gym.gym_trainer')
) and edit_user.userprofile.gym_id != request.user.userprofile.gym_id:…
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-2026-46434 has been found in wger.
Attackers can target a specific entry point like GET /en/user/ over the network to misuse the product.
Data can be tampered with by attackers. CVSS score: 7.1/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "wger CVE-2026-46434" on the vendor's site.
CVE-2026-46434 (wger) — CWE-269 / CVSS v3 7.1
Attack vector: remote (network-reachable) / no user interaction
Attack surface: GET /en/user/ / GET /en/user/{manager.id}/deactivate / gym_trainer / gym_manager
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-269) exists in wger. Attackers reach the vulnerable code path via GET /en/user/.
Check the vendor advisory for the affected versions of wger. Attack surface: GET /en/user/ / GET /en/user/{manager.id}/deactivate / gym_trainer / gym_manager.
Severity: High (CVSS 7.1/10). Data can be tampered with by attackers.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual GET /en/user/ requests with malformed payloads or SQL meta-characters. Run grep -r 'wger' . 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 'wger' . | 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
wger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 'GET /en/user/' /var/log/nginx/access.log | grep -E '(unusual_payload|sqli_pattern)'アクセスログで
GET /en/user/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。 -
3Post-deployment verification verify
Replay attack against GET /en/user/ 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
References
- web github.com
- web security-advisories@github.com
- web github.com