GHSA-fc2v-vcwj-269v · Severity: high · Ecosystem: pip — Bugsink is vulnerable to unauthenticated remote DoS via crafted Brotli input
Bugsink is a self-hosted error tracking tool. In versions prior to 2.0.5, brotli "bombs" (highly compressed brotli streams, such as many zeros) can be sent to the server. Since the server will attempt to decompress these streams before applying various maximums, this can lead to exhaustion of the available memory and thus a 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 version `2.0.5`. The vulnerability is similar to, but distinct from, another brotli-related problem in Bugsink, GHSA-rrx3-2x4g-mq2h/CVE-2025-64509.
Conclusion & alert: CVE-2025-64508 is rated Moderate Risk (45.2/100): CVSS High severity, with low exploitation likelihood (EPSS 0.21%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-04-20 | 0.15% | 0.21% | +0.06% |
| 2 | 2026-04-09 | 0.22% | 0.15% | -0.07% |
| 3 | 2026-03-12 | — | 0.22% | — |
Full EPSS history (4 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | [email protected] |
GHSA-fc2v-vcwj-269v · Severity: high · Ecosystem: pip — Bugsink is vulnerable to unauthenticated remote DoS via crafted Brotli input
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| No affected products in dataset. | |||