# CVE-2026-35149: HCL DFXServer is affected by an Authentication Bypass vulnerability via server response manipulation.

> An attacker can bypass authentication by manipulating server responses to gain unauthorized access to HCL DFXServer.

- **Severity:** High 8.2 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/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:** Not needed
- **Fix available:** No
- **Published:** 16 Jul 2026
- **Updated:** 16 Jul 2026
- **Also known as:** GHSA-8539-9p7j-q3gf

## What is CVE-2026-35149?

CVE-2026-35149 is a high-severity authentication bypass vulnerability in HCL Software DFXServer, published on 16 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

HCL DFXServer is affected by an Authentication Bypass vulnerability via server response manipulation. An unauthorized user without valid credentials can exploit this flaw by intercepting and altering the server's authentication responses, allowing them to gain unauthorized access to the application without verification.

Weakness: CWE-294 (Authentication Bypass by Capture-replay)

## Which versions are affected by CVE-2026-35149?

It affects 1 product.


Products: Hcltech Dfx Server.

## How do I fix CVE-2026-35149?

No fix has been published for CVE-2026-35149 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-35149 being exploited?

There is no known exploitation of CVE-2026-35149 in the wild and no public exploit code.

## Other vulnerabilities in HCL Software DFXServer

- [CVE-2026-35147](https://insights.sbomify.com/CVE-2026-35147/): HCL DFXServer is affected by a Broken Authentication vulnerability via direct API access. (high 8.2)
- [CVE-2026-35146](https://insights.sbomify.com/CVE-2026-35146/): HCL DFXServer is affected by an Unencrypted Communication vulnerability. (medium 6.3)
- [CVE-2026-35148](https://insights.sbomify.com/CVE-2026-35148/): HCL DFXServer is affected by a Missing Access Control vulnerability (medium 6.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-35149 and fix it if it is affected.

What it is: CVE-2026-35149 is a high-severity authentication bypass vulnerability in HCL Software DFXServer, published on 16 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-35149 in the wild and no public exploit code.

Affected product: HCL Software DFXServer. 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-2026-35149/ (Markdown: https://insights.sbomify.com/CVE-2026-35149/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-35149
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-35149
- OSV: https://osv.dev/vulnerability/CVE-2026-35149

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-35149/
Summaries are generated and may contain mistakes; the official description above is the record.