Command Injection in github.com/filebrowser/filebrowser/v2 (CVE-2025-52904)
Summary
Command injection in github.com/filebrowser/filebrowser/v2 (CVE-2025-52904). Successful exploitation can lead to full system takeover. Exploitable via grep. Mitigation: upgrade to 2.33.8 or later.
Original description
The description as published by the source.
File Browser provides a file managing interface within a specified directory and it can be used to upload, delete, preview, rename and edit files. In versions of the web application on the 2.x branch, all users have a scope assigned, and they only have access to the files within that scope. The Command Execution feature of Filebrowser allows the execution of shell commands which are not restricted to the scope, potentially giving an attacker read and write access to all files managed by the server. Until this issue is fixed, the maintainers recommend to completely disable Execute commands for all accounts. Since the command execution is an inherently dangerous feature that is not used by all deployments, it should be possible to completely disable it in the application's configuration. This feature has been disabled by default for all installations from v2.33.8 onwards, including for existent installations. To exploit this vulnerability, the instance administrator must turn on a feature and ignore all the warnings about known vulnerabilities.
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-2025-52904 has been found in github.com/filebrowser/filebrowser/v2.
Attackers can target a specific entry point like grep over the network to misuse the product.
Successful exploitation can lead to full system takeover. CVSS score: 8.0/10.
What to do: upgrade github.com/filebrowser/filebrowser/v2 to 2.33.8 or later.
If unsure, ask your IT team or search "github.com/filebrowser/filebrowser/v2 CVE-2025-52904" on the vendor's site.
CVE-2025-52904 (github.com/filebrowser/filebrowser/v2) — CWE-77 / CVSS v3 8.0
Attack vector: remote (network-reachable) / no user interaction
Attack surface: grep
Patched: 2.33.8 — 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-77) exists in github.com/filebrowser/filebrowser/v2. Attackers reach the vulnerable code path via grep.
Check the vendor advisory for the affected versions of github.com/filebrowser/filebrowser/v2. Attack surface: grep.
Severity: High (CVSS 8.0/10). Successful exploitation can lead to full system takeover.
Update to 2.33.8.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'github.com/filebrowser/filebrowser/v2' . 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/filebrowser/filebrowser/v2' . | 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/filebrowser/filebrowser/v2を grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade github.com/filebrowser/filebrowser/v2 to 2.33.8ステージング環境で 2.33.8 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を含めること。
-
3Post-deployment verification verify
Confirm patched version is live in production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。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
References
- advisory github.com
- advisory nvd.nist.gov
- advisory github.com
- advisory github.com
- package github.com
- package github.com
- report github.com
- web sloonz.github.io
- web pkg.go.dev
- web github.com