# CVE-2024-4358: Progress Telerik Report Server Authentication Bypass by Spoofing

> Unauthenticated attackers can bypass authentication to access restricted functionality in Telerik Report Server on IIS.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Yes, since 13 Jun 2024 (CISA KEV)
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 29 May 2024
- **Updated:** 21 Oct 2025

## What is CVE-2024-4358?

CVE-2024-4358 is a critical authentication bypass vulnerability in Progress Software Corporation Telerik Report Server, published on 29 May 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

In Progress Telerik Report Server, version 2024 Q1 (10.0.24.305) or earlier, on IIS, an unauthenticated attacker can gain access to Telerik Report Server restricted functionality via an authentication bypass vulnerability.

Weakness: CWE-290 (Authentication Bypass by Spoofing)

## Which versions are affected by CVE-2024-4358?

It affects 1 product.


Products: Telerik Report Server 2024.

## How do I fix CVE-2024-4358?

No fix has been published for CVE-2024-4358 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 4 Jul 2024.

## Is CVE-2024-4358 being exploited?

Yes. Attackers have exploited CVE-2024-4358 in the wild since at least 13 Jun 2024.

Public exploit code:

- Progress Telerik Report Server pre-authenticated RCE chain (CVE-2024-4358/CVE-2024-1800) (github_poc): https://github.com/sinsinology/CVE-2024-4358
- https://github.com/Sk1dr0wz/CVE-2024-4358_Mass_Exploit (github_poc): https://github.com/Sk1dr0wz/CVE-2024-4358_Mass_Exploit
- Authentication Bypass Vulnerability — CVE-2024–4358 — Telerik Report Server 2024 (github_poc): https://github.com/verylazytech/CVE-2024-4358
- An Vulnerability detection and Exploitation tool for CVE-2024-4358 (github_poc): https://github.com/RevoltSecurities/CVE-2024-4358
- Telerik Report Server deserialization and authentication bypass exploit chain for CVE-2024-4358/CVE-2024-1800 (github_poc): https://github.com/gh-ost00/CVE-2024-4358
- Telerik Report Server Auth Bypass (metasploit)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-4358 and fix it if it is affected.

What it is: CVE-2024-4358 is a critical authentication bypass vulnerability in Progress Software Corporation Telerik Report Server, published on 29 May 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: Yes. Attackers have exploited CVE-2024-4358 in the wild since at least 13 Jun 2024.

Affected product: Progress Software Corporation Telerik Report Server. 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-2024-4358/ (Markdown: https://insights.sbomify.com/CVE-2024-4358/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-4358
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-4358
- OSV: https://osv.dev/vulnerability/CVE-2024-4358

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-4358/
Summaries are generated and may contain mistakes; the official description above is the record.