# CVE-2025-59873: Session Token Exposure via URL Query Parameters

> Attackers can hijack user sessions by accessing network logs or linked sites due to session tokens being exposed in URL query parameters.

- **Severity:** Medium 5.9 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/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:** 23 Feb 2026
- **Updated:** 26 Feb 2026
- **Also known as:** GHSA-hhvh-4rv2-p55m

## What is CVE-2025-59873?

CVE-2025-59873 is a medium-severity vulnerability in HCL Software ZIE for Web, published on 23 Feb 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

An information exposure vulnerability exists in

Vulnerability in HCL Software ZIE for Web.

The application transmits sensitive session tokens and authentication identifiers within the URL query parameters . An attacker who gains access to any network log or operates a site linked from the application can hijack user sessions

This issue affects ZIE for Web: v16.

Weakness: CWE-598 (Use of HTTP Request With Sensitive Query String)

## Which versions are affected by CVE-2025-59873?


## How do I fix CVE-2025-59873?

No fix has been published for CVE-2025-59873 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-59873 being exploited?

There is no known exploitation of CVE-2025-59873 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-59873 and fix it if it is affected.

What it is: CVE-2025-59873 is a medium-severity vulnerability in HCL Software ZIE for Web, published on 23 Feb 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-2025-59873 in the wild and no public exploit code.

Affected product: HCL Software ZIE for Web. 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-2025-59873/ (Markdown: https://insights.sbomify.com/CVE-2025-59873/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-59873
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-59873
- OSV: https://osv.dev/vulnerability/CVE-2025-59873

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-59873/
Summaries are generated and may contain mistakes; the official description above is the record.