# CVE-2026-19125: EthPress <= 2.3.5 - Unauthenticated Authentication Bypass

> Unauthenticated attackers can bypass authentication and log in as any user, including administrators, by submitting a valid wallet address with an arbitrary signature.

- **Severity:** High 8.1 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 23 Sep 2026
- **Updated:** 24 Sep 2026
- **Also known as:** GHSA-j4cg-29jc-q96r

## What is CVE-2026-19125?

CVE-2026-19125 is a high-severity authentication bypass vulnerability in lynn999 EthPress – Web3 Login, published on 23 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The EthPress – Web3 Login plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 2.3.5. This is due to the verify_login() function in app/Login.php containing a missing return statement in the signature verification failure branch — when Signature::verify2() reports a mismatch, the function only assigns a WP_Error to a local variable and continues executing, causing unconditional fall-through to the login block where Address::log_in() calls wp_set_auth_cookie() regardless of whether the submitted signature is valid. This makes it possible for unauthenticated attackers to log in as any WordPress user who has a linked wallet address — including administrators — by submitting that user's public wallet address alongside an arbitrary well-formed signature, enabling full site takeover.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2026-19125?


## How do I fix CVE-2026-19125?

No fix has been published for CVE-2026-19125 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-19125 being exploited?

There is no known exploitation of CVE-2026-19125 in the wild and no public exploit code.

Public exploit code:

- Unauthenticated Authentication Bypass (github_poc): https://github.com/Polosss/By-Poloss..-..CVE-2026-19125

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-19125 and fix it if it is affected.

What it is: CVE-2026-19125 is a high-severity authentication bypass vulnerability in lynn999 EthPress – Web3 Login, published on 23 Sep 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-2026-19125 in the wild and no public exploit code.

Affected product: lynn999 EthPress – Web3 Login. 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-2026-19125/ (Markdown: https://insights.sbomify.com/CVE-2026-19125/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-19125
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-19125
- OSV: https://osv.dev/vulnerability/CVE-2026-19125

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-19125/
Summaries are generated and may contain mistakes; the official description above is the record.