# CVE-2023-53943: GLPI 9.5.7 Username Enumeration Vulnerability via Lost Password Endpoint

> Attackers can enumerate valid user accounts by analyzing response differences in the password reset endpoint, facilitating targeted phishing or brute-force attacks.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 18 Dec 2025
- **Updated:** 7 Apr 2026
- **Also known as:** GHSA-5w2x-g68p-qvmf, UBUNTU-CVE-2023-53943

## What is CVE-2023-53943?

CVE-2023-53943 is a medium-severity vulnerability in Glpi-Project Glpi, published on 18 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

GLPI 9.5.7 contains a username enumeration vulnerability in the lost password recovery mechanism that allows attackers to validate email addresses. Attackers can systematically test email addresses by submitting requests to the password reset endpoint and analyzing response differences to identify valid user accounts.

Weakness: CWE-203 (Observable Discrepancy)

## Which versions are affected by CVE-2023-53943?

It affects 1 product.


Products: Glpi-Project Glpi.

## How do I fix CVE-2023-53943?

No fix has been published for CVE-2023-53943 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-53943 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-53943 exists.

## Other vulnerabilities in Glpi-Project Glpi

- [CVE-2022-35914](https://insights.sbomify.com/CVE-2022-35914/): Teclib GLPI Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2023-42802](https://insights.sbomify.com/CVE-2023-42802/): GLPI vulnerable to unallowed PHP script execution (critical 10.0)
- [CVE-2023-28849](https://insights.sbomify.com/CVE-2023-28849/): GLPI vulnerable to SQL injection and Stored XSS via inventory agent request (critical 10.0)
- [CVE-2022-35947](https://insights.sbomify.com/CVE-2022-35947/): SQL injection in GLPI (critical 10.0)
- [CVE-2022-31056](https://insights.sbomify.com/CVE-2022-31056/): SQL injection with _actor parameter in GLPI (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-53943 and fix it if it is affected.

What it is: CVE-2023-53943 is a medium-severity vulnerability in Glpi-Project Glpi, published on 18 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-53943 exists.

Affected product: Glpi-Project Glpi. 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-2023-53943/ (Markdown: https://insights.sbomify.com/CVE-2023-53943/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-53943
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-53943
- OSV: https://osv.dev/vulnerability/CVE-2023-53943

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-53943/
Summaries are generated and may contain mistakes; the official description above is the record.