# CVE-2026-64797: Joomla Extension - regularlabs.com - IP spoofing vulnerability in IP login extension

> Attackers can spoof IP headers to bypass authentication and impersonate users in the Joomla IP Login extension.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 22 Jul 2026
- **Updated:** 29 Jul 2026
- **Also known as:** GHSA-4hf8-pxr9-gc7w

## What is CVE-2026-64797?

CVE-2026-64797 is a high-severity authentication bypass vulnerability in regularlabs.com IP Login extension for Joomla, published on 22 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Joomla Extension - regularlabs.com - IP spoofing vulnerability in IP login extension - IP Login trusted forwarded client-IP headers without requiring a configured trusted proxy. Attackers could spoof the IP used for automatic login and potentially impersonate mapped accounts.

Weakness: CWE-290 (Authentication Bypass by Spoofing)

## Which versions are affected by CVE-2026-64797?


## How do I fix CVE-2026-64797?

No fix has been published for CVE-2026-64797 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-64797 being exploited?

There is no known exploitation of CVE-2026-64797 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-64797 and fix it if it is affected.

What it is: CVE-2026-64797 is a high-severity authentication bypass vulnerability in regularlabs.com IP Login extension for Joomla, published on 22 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-64797 in the wild and no public exploit code.

Affected product: regularlabs.com IP Login extension for Joomla. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-64797/ (Markdown: https://insights.sbomify.com/CVE-2026-64797/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-64797
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-64797
- OSV: https://osv.dev/vulnerability/CVE-2026-64797

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-64797/
Summaries are generated and may contain mistakes; the official description above is the record.