What’s Vulnerable › Vulnerabilities

CVE-2025-31120: NamelessMC Vulnerable to Cookie-Based View Count Manipulation

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-04-18 · updated 2026-06-17
• Weakness: CWE-565

Description

NamelessMC is a free, easy to use & powerful website software for Minecraft servers. In version 2.1.4 and prior, an insecure view count mechanism in the forum page allows an unauthenticated attacker to artificially increase the view count. The application relies on a client-side cookie (nl-topic-[tid]) (or session variable for guests) to determine if a view should be counted. When a client does not provide the cookie, every page request increments the counter, leading to incorrect view metrics. 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/9b112c0beab346a38b6f5a51e7773b38c6fc52e7
• https://github.com/NamelessMC/Nameless/releases/tag/v2.2.0
• https://github.com/NamelessMC/Nameless/security/advisories/GHSA-8jv7-77jw-h646
• https://github.com/NamelessMC/Nameless/security/advisories/GHSA-8jv7-77jw-h646

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