CVE-2025-64508 (GCVE-0-2025-64508)
Vulnerability from cvelistv5 – Published: 2025-11-10 21:44 – Updated: 2025-11-12 20:14
VLAI
EPSS
VEX
Title
Bugsink vulnerable to unauthenticated remote DoS via crafted Brotli input
Summary
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.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-11-12 17:35 UTC
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
GitHub_M
CNA
References
8 references
| URL | Tags |
|---|---|
| https://github.com/bugsink/bugsink/security/advis… | x_refsource_CONFIRM |
| https://github.com/google/brotli/issues/1327 | x_refsource_MISC |
| https://github.com/google/brotli/issues/1375 | x_refsource_MISC |
| https://github.com/bugsink/bugsink/pull/266 | x_refsource_MISC |
| https://github.com/google/brotli/pull/1234 | x_refsource_MISC |
| https://github.com/bugsink/bugsink/commit/3f65544… | x_refsource_MISC |
| https://github.com/google/brotli/commit/67d78bc41… | x_refsource_MISC |
| https://github.com/google/brotli/releases/tag/v1.2.0 | x_refsource_MISC |
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Nomenclature
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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