AI Threat Alert
## Summary `Backpack\CRUD\Stats::makeCurlRequest` builds a shell command using unescaped input that originates from the HTTP `Host` header, then passes it to `exec()`. A specially crafted Host header can break out of the shell argument and cause the server to execute arbitrary OS commands as the...
Full CISO analysis pending enrichment.
What systems are affected?
| Package | Ecosystem | Vulnerable Range | Patched |
|---|---|---|---|
| backpack/crud | composer | >= 4.1.0, < 4.1.72 | 4.1.72 |
Do you use backpack/crud? You're affected.
How severe is it?
What is the attack surface?
What should I do?
Patch available
Update backpack/crud to version 4.1.72
Which compliance frameworks are affected?
Compliance analysis pending. Sign in for full compliance mapping when available.
Frequently Asked Questions
What is CVE-2026-54182?
## Summary `Backpack\CRUD\Stats::makeCurlRequest` builds a shell command using unescaped input that originates from the HTTP `Host` header, then passes it to `exec()`. A specially crafted Host header can break out of the shell argument and cause the server to execute arbitrary OS commands as the web user. The vulnerable code path is reached from `BackpackServiceProvider::boot()` on every HTTP request in production when `exec()` and `curl` are available. A 1-in-100 random gate is the only guard — an attacker can reliably trigger it by retrying. ## Severity **High — CVSS 8.1** `CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H` Attack Complexity is rated **High** because default nginx and Apache configurations typically strip or reject malformed Host headers before they reach PHP, and `exec()` is often disabled for web processes in hardened environments. Both mitigations must be absent for exploitation. ## Impact A successful exploit yields OS command execution as the web server user (`www-data`, `nginx`, etc.), giving an unauthenticated attacker access to environment secrets (APP_KEY, database credentials, API keys in `.env`), the filesystem, and any service the server can reach. ## Fix `makeCurlRequest` was replaced with the Guzzle-based path already present in the codebase, eliminating the shell-command construction entirely. **Upgrade to a patched release immediately.** ## Affected versions | Branch | Vulnerable range | First safe version | |--------|-----------------|-------------------| | 4.1.x | `< 4.1.70` | 4.1.70 | | 5.x | `< 5.6.2` | 5.6.2 | | 6.x | `< 6.8.13` | 6.8.13 | | 7.x | `< 7.0.36` | 7.0.36 | ## Credits Reported by Vishal Shukla ([@shukla304](https://github.com/shukla304)) via sechub.dev AI Agent.
Is CVE-2026-54182 actively exploited?
No confirmed active exploitation of CVE-2026-54182 has been reported, but organizations should still patch proactively.
How to fix CVE-2026-54182?
Update to patched version: backpack/crud 4.1.72.
What is the CVSS score for CVE-2026-54182?
CVE-2026-54182 has a CVSS v3.1 base score of 8.1 (HIGH).
What are the technical details?
Original Advisory
## Summary `Backpack\CRUD\Stats::makeCurlRequest` builds a shell command using unescaped input that originates from the HTTP `Host` header, then passes it to `exec()`. A specially crafted Host header can break out of the shell argument and cause the server to execute arbitrary OS commands as the web user. The vulnerable code path is reached from `BackpackServiceProvider::boot()` on every HTTP request in production when `exec()` and `curl` are available. A 1-in-100 random gate is the only guard — an attacker can reliably trigger it by retrying. ## Severity **High — CVSS 8.1** `CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H` Attack Complexity is rated **High** because default nginx and Apache configurations typically strip or reject malformed Host headers before they reach PHP, and `exec()` is often disabled for web processes in hardened environments. Both mitigations must be absent for exploitation. ## Impact A successful exploit yields OS command execution as the web server user (`www-data`, `nginx`, etc.), giving an unauthenticated attacker access to environment secrets (APP_KEY, database credentials, API keys in `.env`), the filesystem, and any service the server can reach. ## Fix `makeCurlRequest` was replaced with the Guzzle-based path already present in the codebase, eliminating the shell-command construction entirely. **Upgrade to a patched release immediately.** ## Affected versions | Branch | Vulnerable range | First safe version | |--------|-----------------|-------------------| | 4.1.x | `< 4.1.70` | 4.1.70 | | 5.x | `< 5.6.2` | 5.6.2 | | 6.x | `< 6.8.13` | 6.8.13 | | 7.x | `< 7.0.36` | 7.0.36 | ## Credits Reported by Vishal Shukla ([@shukla304](https://github.com/shukla304)) via sechub.dev AI Agent.
Weaknesses (CWE)
CWE-116 Improper Encoding or Escaping of Output
Primary
CWE-20 Improper Input Validation
Primary
CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Primary
CWE-116 — Improper Encoding or Escaping of Output: The product prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. As a result, the intended structure of the message is not preserved.
- [Architecture and Design] Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid. For example, consider using the ESAPI Encoding control [REF-45] or a similar tool, library, or framework. These will help the programmer encode outputs in a manner less prone to error. Alternately, use built-in functions, but consider using wrappers in case those functions are discovered to have a vulnerability.
- [Architecture and Design] If available, use structured mechanisms that automatically enforce the separation between data and code. These mechanisms may be able to provide the relevant quoting, encoding, and validation automatically, instead of relying on the developer to provide this capability at every point where output is generated. For example, stored procedures can enforce database query structure and reduce the likelihood of SQL injection.
Source: MITRE CWE corpus.
CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H References
- github.com/Laravel-Backpack/CRUD/releases/tag/4.1.72
- github.com/Laravel-Backpack/CRUD/releases/tag/5.6.2
- github.com/Laravel-Backpack/CRUD/releases/tag/6.8.13
- github.com/Laravel-Backpack/CRUD/releases/tag/7.0.36
- github.com/Laravel-Backpack/CRUD/security/advisories/GHSA-mrc5-3mm3-45c5
- github.com/advisories/GHSA-mrc5-3mm3-45c5