# CVE-2025-56676: Auth bypass in n/a

> Attackers can take over any user account by exploiting improper token validation in the password reset mechanism of Zender.

- **Severity:** Medium 5.4 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 30 Sep 2025
- **Updated:** 1 Oct 2025
- **Also known as:** GHSA-vgh5-4jjp-4pmh

## What is CVE-2025-56676?

CVE-2025-56676 is a medium-severity authentication bypass vulnerability in n/a, published on 30 Sep 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

TitanSystems Zender v3.9.7 contains an account takeover vulnerability in its password reset functionality. A temporary password or reset token issued to one user can be used to log in as another user, due to improper validation of token-user linkage. This allows remote attackers to gain unauthorized access to any user account by exploiting the password reset mechanism. The vulnerability occurs because the reset token is not correctly bound to the requesting account and is accepted for other user emails during login, enabling privilege escalation and information disclosure.

Weakness: CWE-1259 (Improper Restriction of Security Token Assignment)

## Which versions are affected by CVE-2025-56676?

It affects 1 product.


Products: Titansystems Zender.

## How do I fix CVE-2025-56676?

No fix has been published for CVE-2025-56676 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-56676 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-56676 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-56676 and fix it if it is affected.

What it is: CVE-2025-56676 is a medium-severity authentication bypass vulnerability in n/a, published on 30 Sep 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-56676 exists.

Affected product: n/a. 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-2025-56676/ (Markdown: https://insights.sbomify.com/CVE-2025-56676/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-56676
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-56676
- OSV: https://osv.dev/vulnerability/CVE-2025-56676

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-56676/
Summaries are generated and may contain mistakes; the official description above is the record.