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CVE

CVE-2025-64508

Bugsink vulnerable to unauthenticated remote DoS via crafted Brotli input
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CVE

CVE-2025-64508

Bugsink 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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
7.5
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
C
H
U
-

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/64xxx/CVE-2025-64508.json, https://github.com/bugsink/bugsink/commit/3f65544aab3ad5303d97009136640de97b0676a5, https://github.com/bugsink/bugsink/pull/266, https://github.com/bugsink/bugsink/security/advisories/GHSA-fc2v-vcwj-269v, https://github.com/google/brotli/commit/67d78bc41db1a0d03f2e763497748f2f69946627, https://github.com/google/brotli/issues/1327, https://github.com/google/brotli/issues/1375, https://github.com/google/brotli/pull/1234, https://github.com/google/brotli/releases/tag/v1.2.0, https://nvd.nist.gov/vuln/detail/CVE-2025-64508

Severity

7.5

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
7.5
EPSS Probability
0.00096%
EPSS Percentile
0.27109%
Introduced Version
0
Fix Available
3f65544aab3ad5303d97009136640de97b0676a5,67d78bc41db1a0d03f2e763497748f2f69946627

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