CVE-2025-64509

HIGH EPSS 19.0%

Published Nov 10, 20257mo ago · Modified Jun 17, 20262w ago

7.5 CVSS 3.1

High

Published Nov 10, 2025 7mo ago

Last Modified Jun 17, 2026 2w ago

Description

Bugsink is a self-hosted error tracking tool. In versions prior to 2.0.6, a specially crafted Brotli-compressed envelope can cause Bugsink to spend excessive CPU time in decompression, leading to denial of service. This can be done if the DSN is known, which it is in many common setups (JavaScript, Mobile Apps). The issue is patched in Bugsink 2.0.6. The vulnerability is similar to, but distinct from, another brotli-related problem in Bugsink, GHSA-fc2v-vcwj-269v/CVE-2025-64508.

CVSS Details

Base Score

7.5

Exploitability

3.9

Impact

3.6

Vector string

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector Network

Attack Complexity Low

Privileges Required None

User Interaction None

Scope Unchanged

Confidentiality None

Integrity None

Availability High

Threat Intelligence

EPSS Exploit Probability

19.0% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-770

References 1

github.com https://github.com/bugsink/bugsink/security/advisories/GHSA-rrx3-2x4g-mq2h

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.