backpack/crud security advisory

CVE-2026-54182: Laravel Backpack CRUD: OS command injection in Stats::makeCurlRequest via attacker-controlled Host header (pre-auth)

CVE-2026-54182 is a high-severity command injection vulnerability in the PHP package backpack/crud (CVSS 8.1), published 14 September 2026. It is fixed in 4.1.72, 5.6.2, 6.8.13 and 7.0.36, one per release line; earlier versions on each line are affected. It can be exploited without an account.

high 8.1 published 2026-09-14 · updated 2026-09-30

Affected versions: >= 4.1.0, < 4.1.72
>= 5.0.0, < 5.6.2
>= 6.0.0, < 6.8.13
>= 7.0.0, < 7.0.36
Fixed in: 4.1.72, 5.6.2, 6.8.13, 7.0.36
Newest release: 7.1.24
Severity: High · CVSS 8.1
Type: Command injection
CWE-20, CWE-78, CWE-116
Exploited in the wild: Not on the CISA KEV list
checked 2026-11-04

Is your backpack/crud version affected?

Run composer show backpack/crud in your project, then enter the version. We check it against this and every other known backpack/crud advisory.

Who can exploit CVE-2026-54182

Access: No account. Anyone who can send a request to an app that uses the affected code.
Conditions: It only works under specific conditions the attacker does not fully control (CVSS rates the attack as high complexity).

CVSS vector (scored by GitHub): CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Your app is only exposed if it uses the affected part of backpack/crud. The advisory below says which part that is. If you are not sure, upgrade anyway: it costs less than finding out.

How to fix CVE-2026-54182 in backpack/crud

Find the installed version: composer show backpack/crud. If you never required it yourself, composer why backpack/crud shows which package pulls it in.
Update it: composer update backpack/crud --with-all-dependencies. You need the fixed version for your release line (4.1.72, 5.6.2, 6.8.13 and 7.0.36).
If Composer will not go that high, your composer.json constraint is holding it back. Widen it (for example "backpack/crud": "^7.0.36" if you can take that version), or upgrade the package that requires it.
Run composer audit. It reads the same advisory data and should no longer list CVE-2026-54182.
Commit composer.lock and deploy it. On the server, run composer install --no-dev from the lock file, not composer update.

If you cannot upgrade yet

General hardening for command injection issues while the upgrade waits. None of it replaces the fix.

Do not pass user input to the affected process or shell call.
If your app does not use the affected feature, note that in your audit, but still plan the upgrade.

The CVE-2026-54182 advisory

backpack/crud provides Create, Read, Update & Delete (CRUD) functions for Backpack, a collection of Laravel packages that help users build custom administration panels. Prior to 4.1.70, 5.6.2, 6.8.13, and 7.0.36, Backpack\CRUD\Stats::makeCurlRequest in src/Stats.php is reached from BackpackServiceProvider::boot() and constructs a shell command with a URL influenced by the HTTP Host header, which it passes to exec() without adequate shell neutralization. An unauthenticated attacker whose malformed Host value reaches PHP can inject operating-system commands when exec() and curl are available and the 1-in-100 random gate is reached. Repeated requests can reach the random gate. Successful exploitation executes commands as the web-server user, exposing environment secrets, files, and reachable services and permitting data modification or service disruption. Common reverse-proxy Host validation and hardened PHP configurations that disable exec() reduce reachability but do not correct the vulnerable construction. This issue is fixed in versions 4.1.70, 5.6.2, 6.8.13, and 7.0.36.

Description from the CVE record, published by GitHub (the CVE Numbering Authority), via the NVD entry for CVE-2026-54182. Advisory title: “Laravel Backpack CRUD: OS command injection in Stats::makeCurlRequest via attacker-controlled Host header (pre-auth)”.

References

GitHub advisory GHSA-mrc5-3mm3-45c5 github.com
Fix commit 0f2faaf github.com
Fix commit 1476a37 github.com
Fix commit 282ba2a github.com
Fix commit 471935e github.com
Pull request #6012 github.com
Release 4.1.72 github.com
Release 5.6.2 github.com

Other backpack/crud advisories

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Where this data comes from

Affected and fixed versions: the Packagist security advisories API (GitHub Advisory Database and FriendsOfPHP), the same data composer audit uses. Synced 2026-11-03.
Description, score, weakness and references: NIST National Vulnerability Database (NVD), checked 2026-11-04. This product uses data from the NVD API but is not endorsed or certified by the NVD.
Exploited-in-the-wild status: the CISA Known Exploited Vulnerabilities catalog, checked 2026-11-04.
Compiled by Daniel Lasek at Laskyr from the sources above. The summary, “who can exploit it”, “how to fix it” and hardening sections are our plain-English reading of the record and are generated from it. The quoted description is the record's own text. Spot an error? Tell us.