What’s Vulnerable › Vulnerabilities

CVE-2025-29784: NamelessMC Has Lack of Length Validation for s Parameter in GET Requests

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-04-18 · updated 2026-06-17
• Weakness: CWE-20

Description

NamelessMC is a free, easy to use & powerful website software for Minecraft servers. In version 2.1.4 and prior, the s parameter in GET requests for forum search functionality lacks length validation, allowing attackers to submit excessively long search queries. This oversight can lead to performance degradation and potential denial-of-service (DoS) attacks. This issue has been patched in version 2.2.0.

Affected products

• NamelessMC Nameless: before 2.2.0 — fixed in 2.2.0

How to fix

Upgrade to a fixed version: NamelessMC Nameless 2.2.0. Check the vendor advisory for mitigations.

References

• https://github.com/NamelessMC/Nameless/commit/f5341e56930a98978171e0a871d60f19ab30ebdd
• https://github.com/NamelessMC/Nameless/releases/tag/v2.2.0
• https://github.com/NamelessMC/Nameless/security/advisories/GHSA-4hrq-rf96-c2jm
• https://github.com/NamelessMC/Nameless/security/advisories/GHSA-4hrq-rf96-c2jm

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