How severe is CVE-2025-30158?

CVE-2025-30158 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability high.

Is CVE-2025-30158 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-30158?

CVE-2025-30158 affects Namelessmc Nameless. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-30158?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-30158 have an EU (EUVD) identifier?

Yes. CVE-2025-30158 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-11864.

When was CVE-2025-30158 published?

CVE-2025-30158 was published on 2025-04-18 and last updated on 2026-06-17.

CVE-2025-30158

CVE-2025-30158 is a high-severity vulnerability in Namelessmc Nameless with a CVSS 3.x base score of 7.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-400.

Key facts

Severity: High (CVSS 3.x base score 7.1)
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-11864
Weakness: CWE-400
Affected product: Namelessmc Nameless
Published: 2025-04-18
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2025-30158?: 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.
How severe is CVE-2025-30158?: CVE-2025-30158 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability high.
Is CVE-2025-30158 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-30158?: CVE-2025-30158 affects Namelessmc Nameless. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-30158?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-30158 have an EU (EUVD) identifier?: Yes. CVE-2025-30158 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-11864.
When was CVE-2025-30158 published?: CVE-2025-30158 was published on 2025-04-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:namelessmc:nameless:*:*:*:*:*:*:*:*

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