# CVE-2026-103523: CVE-2026-103523

> Attackers can redirect users to malicious sites via the address creation workflow due to missing validation of the next parameter.

- **Severity:** Medium 6.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N`)
- **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:** 12 Oct 2026
- **Updated:** 16 Oct 2026
- **Also known as:** GHSA-2rgp-5p5r-5w94

## What is CVE-2026-103523?

CVE-2026-103523 is a medium-severity vulnerability in Thelia, published on 12 Oct 2026. 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

Thelia v2.6.0 contains an open redirect vulnerability in its address creation workflow. After a user accesses a crafted URL and successfully submits the “Add New Address” form, the application redirects them to the URL specified in the `next` parameter. Because the application does not validate whether the destination belongs to the same origin or an approved allowlist, an attacker can supply an arbitrary external URL and redirect users to an attacker-controlled website.

Weakness: CWE-601 (URL Redirection to Untrusted Site)

## Which versions are affected by CVE-2026-103523?


## How do I fix CVE-2026-103523?

No fix has been published for CVE-2026-103523 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-103523 being exploited?

There is no known exploitation of CVE-2026-103523 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-103523 and fix it if it is affected.

What it is: CVE-2026-103523 is a medium-severity vulnerability in Thelia, published on 12 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-103523 in the wild and no public exploit code.

Affected product: Thelia. 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-2026-103523/ (Markdown: https://insights.sbomify.com/CVE-2026-103523/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-103523
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-103523
- OSV: https://osv.dev/vulnerability/CVE-2026-103523

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-103523/
Summaries are generated and may contain mistakes; the official description above is the record.