# CVE-2025-53633: GO-2025-3810 - Chall-Manager's scenario decoding process does not check for zip bombs in github.com/ctfer-io/chall-manager

Source: https://junglewise.ai/threats/cve-2025-53633-chall-manager-s-scenario-decoding-process-does-not-check-for-zip  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-07-28  
License: CC BY 4.0 with a link back

CVE-2025-53633 · Severity: medium · CVSS 4 · Published 2025-07-28

Chall-Manager's scenario decoding process does not check for zip bombs in github.com/ctfer-io/chall-manager

Technologies: [github.com/ctfer-io/chall-manager (Go)](https://junglewise.ai/threats/technologies/github-com-ctfer-io-chall-manager). Vendors: [Go](https://junglewise.ai/threats/vendors/go).

## Quick answers

**Is CVE-2025-53633 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-53633 being exploited in the wild.

**How severe is CVE-2025-53633?** Medium severity, with a CVSS score of 4, published 28 July 2025.

**Which products and versions are affected?** github.com/ctfer-io/chall-manager (Go) SEMVER:introduced=0,fixed=0.1.4.

**Is there a fix for CVE-2025-53633?** Yes. github.com/ctfer-io/chall-manager (Go): upgrade to 0.1.4 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2025-53633?** Check whether you run github.com/ctfer-io/chall-manager (Go) 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.

## How to fix

- github.com/ctfer-io/chall-manager (Go): upgrade to 0.1.4 or later

  ```sh
  go get github.com/ctfer-io/chall-manager@v0.1.4
  ```


## Affected products

- github.com/ctfer-io/chall-manager (Go) SEMVER:introduced=0,fixed=0.1.4

## Identifiers

- CVE-2025-53633
- GHSA-r7fm-3pqm-ww5w
- GO-2025-3810

## Related threats

- [Chall-Manager is vulnerable to Path Traversal when extracting/decoding a zip archive](https://junglewise.ai/threats/cve-2025-53632-chall-manager-is-vulnerable-to-path-traversal-when-extracting)
- [Chall-Manager's HTTP Gateway is vulnerable to DoS due to missing header timeout](https://junglewise.ai/threats/cve-2025-53634-chall-manager-s-http-gateway-is-vulnerable-to-dos-due-to-missing)