wp2shell-scan

Detect and clean up wp2shell (CVE‑2026‑63030) compromise across one or many WordPress sites.

wp2shell is the pre‑authentication remote‑code‑execution vulnerability fixed in WordPress 7.0.2 / 6.9.5 / 6.8.6 (2026‑07‑17). A public PoC appeared within a day and mass‑exploitation followed within ~48 hours. Patching closes the hole — but a site exploited before it was patched is already compromised, and updating does not remove the attacker's persistence.

This tool finds and removes that persistence. It's a single, dependency‑light Bash script that runs read‑only by default and can scan thousands of sites in one pass.

⚠️ This is defensive tooling. It contains no exploit code. Snapshot a site before running --clean.

What it detects

Post‑exploitation, wp2shell tooling typically leaves two persistence artifacts, both of which this tool finds:

1. A rogue administrator — several variants seen: user_login = wpsvc_<hex> / wp2_<hex> / w2s_<hex>, or an email on an attacker domain (@wp2shell.*, @shellcode.*, @wordpress-svc.internal, @wordpress-noreply.net, @x.lol), with the administrator role. (Note: @system.local is a legit placeholder admin email on some managed hosts — it is deliberately not treated as an IOC.)
2. A webshell disguised as a plugin — wp-content/plugins/<plausible-name>-<6hex>/<same>.php: a tiny (~1.3 KB) PHP file with a fake Author: WordPress.org Community header, gated behind a token, exposing a ?c=<command> interface.

It also detects the generic case: any small PHP file under wp-content/ that pipes $_GET['c'] into a command/eval sink.

Install

curl -fsSLO https://raw.githubusercontent.com/InstaWP/wp2shell-scan/main/wp2shell-scan.sh
chmod +x wp2shell-scan.sh

Requires bash, find, grep, and a mysql/mariadb client. WP‑CLI is used when present (cleaner user deletion) but is not required — webshell detection needs no database at all.

Usage

# Scan ONE site (read-only)
./wp2shell-scan.sh --path /var/www/example.com

# Scan EVERY WordPress install under a base directory (bulk)
./wp2shell-scan.sh --base /var/www
./wp2shell-scan.sh --base /home            # shared hosting

# Auto-detect common layouts (/var/www/*, /home/*/public_html, ...)
./wp2shell-scan.sh

# Machine-readable
./wp2shell-scan.sh --base /var/www --json > report.json

# CLEAN — quarantine + remove backdoors, rotate wp-config salts (logs everyone out)
./wp2shell-scan.sh --base /var/www --clean --yes

Removed artifacts are moved to a quarantine directory (not deleted outright) so you keep evidence. Exit code is 1 when compromise is found (scan) or cleaned (clean), 0 when clean — handy for cron/CI.

Sample output

[COMPROMISED] /var/www/example.com  — 2 backdoor admin(s), 2 webshell(s)
      admin: ID=41 wpsvc_2e1487df8abb <wpsvc_2e1487df8abb@wordpress-svc.internal> (2026-07-19 06:41:48)
      webshell: .../wp-content/plugins/security-headers-manager-8d1d21/security-headers-manager-8d1d21.php
[clean] /var/www/other-site.com
----------------------------------------------------------------
scanned=812  clean=811  compromised=1  cleaned=0

After cleaning

--clean removes the admin + webshell and rotates salts. You must still:

1. Update WordPress core to 7.0.2 / 6.9.5 / 6.8.6 (the actual fix).
2. Reset all admin passwords and reinstall/verify core + plugins (wp core verify-checksums).
3. Rotate any secrets the site could read — DB password, API keys, SMTP creds — assume they leaked.
4. Review what the shell ran — your access logs record the ?c= command values.
5. Block the batch route at your edge/origin until every site is patched (/wp-json/batch/v1, ?rest_route=/batch/v1, incl. %2f‑encoded). Put it at the origin if a CDN might wave the REST path through.

Check manually (no tool)

Rogue admins:

SELECT u.ID,u.user_login,u.user_email,u.user_registered
FROM wp_users u JOIN wp_usermeta m ON u.ID=m.user_id
WHERE m.meta_key='wp_capabilities' AND m.meta_value LIKE '%administrator%'
ORDER BY u.user_registered DESC;

Webshell plugins:

find wp-content/plugins -maxdepth 1 -type d -regextype posix-extended -regex '.*-[0-9a-f]{6}$'
grep -rl "\$_GET\['c'\]" wp-content/plugins/

Prefer an AI agent?

See CLEANUP-WITH-CLAUDE.md for a ready‑to‑paste prompt that drives Claude Code (or any capable coding agent) through the same detection and cleanup on a single site, with human confirmation before each destructive step.

License

MIT — see LICENSE. Provided as‑is, no warranty. Built and battle‑tested during a live incident by the team at InstaWP.