CVE-2025-53633CWE-405

Chall-Manager's scenario decoding process does not check for zip bombs

High · published July 10, 2025

CVSS v4.0
8.7
EPSS
1%
Percentile
43.8
In the wild
Unconfirmed
What it is

🚨 A sneaky zip bomb can wreak havoc in Chall-Manager, where unverified content sizes open the door to chaos! ⚡ Think of it like a prank gift box: perfectly wrapped on the outside, but once you open it, a cascade of confetti (or worse!) erupts, overwhelming everything around it. Just like that, a zip bomb can expand exponentially, flooding your system with junk data. If exploited, an attacker could unleash a flood of decompressed data, potentially crashing the system and leading to significant downtime or even data loss. The worst part? They don’t even need an invitation to join the party! Anyone can trigger this disaster without authentication or authorization, making it alarmingly easy to exploit.

Put simply

Think of it like a prank gift box: perfectly wrapped on the outside, but once you open it, a cascade of confetti (or worse!) erupts, overwhelming everything around it. Just like that, a zip bomb can expand exponentially, flooding your system with junk data. This vulnerability occurs because Chall-Manager does not check the size of the decoded content when processing zip archives, allowing malicious users to trigger decompression that could lead to denial of service attacks.

What to do

If exploited, an attacker could unleash a flood of decompressed data, potentially crashing the system and leading to significant downtime or even data loss. The worst part? They don’t even need an invitation to join the party! Anyone can trigger this disaster without authentication or authorization, making it alarmingly easy to exploit. To secure your system, immediately upgrade to version 0.1.4, where the patch has been implemented. Additionally, consider moving the Chall-Manager instance deeper into your infrastructure to minimize exposure and ensure only authorized users can access it. Stay vigilant and monitor your systems for any unusual activity! You've got this! With these steps, you'll lock it down and keep your systems safe! 🛡️

The record
Technical detail
CVSS v4.0
8.7 · HIGH
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00527 · 43.8th percentile
Weakness
CWE-405 · Asymmetric Resource Consumption (Amplification)
Published
2025-07-10T19:38Z
EPSS history
Timeline
  • 10 JUL 19:38Z
    Chall-Manager's scenario decoding process does not check for zip bombs
    cvelistv5