CVE-2025-64508: fallo de gravedad alta en bugsink
Bugsink vulnerable to unauthenticated remote DoS via crafted Brotli input
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
21Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 7.5epss 0.5%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Productos afectados
bugsink · bugsinkCVEs relacionadas — bugsink
En el mismo producto, de las más peligrosas a las menos.
CVE-2025-54433HIGHBugsink is vulnerable to Path Traversal attacks via event_id in ingestionEPSS 0.7%CVE-2026-53954MEDIUMBugsink: DOS using large numbers of event tagsEPSS 0.6%CVE-2025-64509HIGHBugsink vulnerable to unauthenticated remote DoS via crafted Brotli input (via CPU)EPSS 0.3%CVE-2026-27614CRITICALBugsink is vulnerable to Stored XSS via Pygments fallback in stacktrace renderingEPSS 0.3%CVE-2026-40162HIGHBugsink affected by authenticated arbitrary file write in artifactbundle/assembleEPSS 0.3%CVE-2026-44502MEDIUMBugsink: SSRF bypass in `validate_webhook_url`EPSS 0.3%
Referencias
https://github.com/bugsink/bugsink/commit/3f65544aab3ad5303d97009136640de97b0676a5https://github.com/bugsink/bugsink/pull/266https://github.com/bugsink/bugsink/security/advisories/GHSA-fc2v-vcwj-269vhttps://github.com/google/brotli/commit/67d78bc41db1a0d03f2e763497748f2f69946627https://github.com/google/brotli/issues/1327https://github.com/google/brotli/issues/1375https://github.com/google/brotli/pull/1234https://github.com/google/brotli/releases/tag/v1.2.0