What is CVE-2025-48053?

CVE-2025-48053 is a high-severity vulnerability in Discourse, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2025-06-09.

How severe is CVE-2025-48053?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2025-48053 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Resource exhaustion in Discourse

CVE-2025-48053

Discourse is an open-source discussion platform. Prior to version 3.4.4 of the `stable` branch, version 3.5.0.beta5 of the `beta` branch, and version 3.5.0.beta6-dev of the `tests-passed` branch, sending a malicious URL in a PM to a bot us…

Vulnerability class: DoS (Denial of Service)

EPSS: 0.003 (23.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Discourse — versions < 3.5.0.beta5, < 3.4.4, 3.5.0

Weakness classification (CWE)

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2025-48053?: CVE-2025-48053 is a high-severity vulnerability in Discourse, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2025-06-09.
How severe is CVE-2025-48053?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2025-48053 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.