CVE-2025-30158
In version 2.1.4 and prior, the forum allows users to post iframe elements inside forum topics/comments/feed with no restriction on the iframe's width and height attributes.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.53%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
NamelessMC is a free, easy to use & powerful website software for Minecraft servers. In version 2.1.4 and prior, the forum allows users to post iframe elements inside forum topics/comments/feed with no restriction on the iframe's width and height attributes. This allows an authenticated attacker to perform a UI-based denial of service (DoS) by injecting oversized iframes that block the forum UI and disrupt normal user interactions. This issue has been patched in version 2.2.0.
- CVSS 3.1
- 7.1 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
- EPSS
- 0.53% probability · 43th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-400
- Affected
- namelessmc/nameless
- Source
- security-advisories@github.com
References
- https://github.com/NamelessMC/Nameless/commit/caa42a975338a13fbc1658e8c440108f16135643Patch
- https://github.com/NamelessMC/Nameless/releases/tag/v2.2.0Release Notes
- https://github.com/NamelessMC/Nameless/security/advisories/GHSA-2prx-rgr7-hq5fExploit, Vendor Advisory
- https://github.com/NamelessMC/Nameless/security/advisories/GHSA-2prx-rgr7-hq5fExploit, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.