# CVE-2026-29106: SuiteCRM has blind XSS in return_id parameter

> Attackers can execute arbitrary scripts in victim browsers via the return_id parameter, potentially leading to session hijacking or data theft.

- **Severity:** Medium 5.9 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 19 Mar 2026
- **Updated:** 20 Mar 2026
- **Also known as:** GHSA-7qrj-5hj6-7c2m

## What is CVE-2026-29106?

CVE-2026-29106 is a medium-severity cross-site scripting vulnerability in SuiteCRM, published on 19 Mar 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

SuiteCRM is an open-source, enterprise-ready Customer Relationship Management (CRM) software application. Prior to versions 7.15.1 and 8.9.3, the value of the return_id request parameter is copied into the value of an HTML tag attribute which is an event handler and is encapsulated in double quotation marks. Versions 7.15.1 and 8.9.3 patch the issue. Users should also use a Content Security Policy (CSP) header to completely mitigate XSS.

Weakness: CWE-80 (Improper Neutralization of Script-Related HTML Tags in a Web Page), CWE-79 (Improper Neutralization of Input During Web Page Generation), CWE-159 (Improper Handling of Invalid Use of Special Elements), CWE-116 (Improper Encoding or Escaping of Output)

## Which versions are affected by CVE-2026-29106?

It affects 1 product.


Products: Suitecrm Suitecrm.

## How do I fix CVE-2026-29106?

No fix has been published for CVE-2026-29106 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-29106 being exploited?

There is no known exploitation of CVE-2026-29106 in the wild and no public exploit code.

## Other vulnerabilities in SuiteCRM

- [CVE-2026-29103](https://insights.sbomify.com/CVE-2026-29103/): SuiteCRM Vulnerable to Remote Code Execution via Module Loader Package Scanner Bypass (critical 9.1)
- [CVE-2026-29099](https://insights.sbomify.com/CVE-2026-29099/): SuiteCRM has Authenticated Blind SQL Injection in OutboundEmail Legacy Functionality. (high 8.8)
- [CVE-2026-33288](https://insights.sbomify.com/CVE-2026-33288/): SuiteCRM has Authenticated SQL Injection in Authentication Module (high 8.8)
- [CVE-2026-33289](https://insights.sbomify.com/CVE-2026-33289/): SuiterCRM has LDAP Filter Injection in Authentication Module (high 8.8)
- [CVE-2026-29109](https://insights.sbomify.com/CVE-2026-29109/): SuiteCRM Authenticated Remote Code Execution via Unsafe Deserialization in SavedSearch Filter Processing (high 8.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-29106 and fix it if it is affected.

What it is: CVE-2026-29106 is a medium-severity cross-site scripting vulnerability in SuiteCRM, published on 19 Mar 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-29106 in the wild and no public exploit code.

Affected product: SuiteCRM. 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-2026-29106/ (Markdown: https://insights.sbomify.com/CVE-2026-29106/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-29106
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-29106
- OSV: https://osv.dev/vulnerability/CVE-2026-29106

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-29106/
Summaries are generated and may contain mistakes; the official description above is the record.