# CVE-2025-55887: ARD GEC en ligne XSS in transactionID parameter

Source: https://junglewise.ai/threats/cve-2025-55887-ard-gec-en-ligne-xss-in-transactionid-parameter  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-09-22. Updated: 2026-07-05  
License: CC BY 4.0 with a link back

CVE-2025-55887 · Severity: medium · CVSS 6.1 · Published 2025-09-22

ARD GEC en ligne, a meal reservation service used by schools, hospitals, and businesses, contains a security flaw in its transaction confirmation page. An attacker can trick a user into clicking a malicious link, allowing the attacker to run unauthorized scripts in the user's browser. This could lead to the theft of login cookies, session hijacking, or unauthorized actions performed on the user's behalf.

Technologies: [Ard Gec En Ligne](https://junglewise.ai/threats/technologies/gec-en-ligne). Vendors: [Ard](https://junglewise.ai/threats/vendors/ard).

## Quick answers

**Is CVE-2025-55887 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-55887 being exploited in the wild.

**How severe is CVE-2025-55887?** Medium severity, with a CVSS score of 6.1, published 22 September 2025.

**Which products and versions are affected?** Ard Gec En Ligne -.

**Is there a fix for CVE-2025-55887?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2025-55887 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2025-55887?** Check whether you run Ard Gec En Ligne at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A reflected Cross-Site Scripting (XSS) vulnerability exists in the ARD meal reservation service (GEC en ligne) within the 'transactionID' GET parameter on the transaction confirmation page. The application fails to properly validate input and encode output for this parameter, allowing an unauthenticated remote attacker to inject malicious scripts. Exploitation requires a victim to interact with a specially crafted URL (User Interaction required). Successful exploitation can result in the execution of arbitrary JavaScript in the context of the victim's session, potentially leading to session cookie theft (CWE-79). A proof-of-concept payload has been publicly disclosed.

## Affected products

- ARD GEC en ligne -

## Timeline

- 2025-09-22: disclosed: Initial disclosure of CVE-2025-55887
- 2025-09-22: advisory: NVD publication date

## References

- [http://ard.com/](http://ard.com/)
- [https://github.com/0xZeroSec/CVE-2025-55887](https://github.com/0xZeroSec/CVE-2025-55887)
- [https://services.ard.fr/index.php](https://services.ard.fr/index.php)

## Related threats

- [ARD GEC en ligne XSS in Ajax transaction manager](https://junglewise.ai/threats/cve-2025-55888-ard-gec-en-ligne-xss-in-ajax-transaction-manager)
- [Alpes Recherche et Developpement ARD GEC en Ligne SQL injection in index.php](https://junglewise.ai/threats/cve-2025-55885-alpes-recherche-et-developpement-ard-gec-en-ligne-sql-injection)