01 Record
CVE-2025-64508
Bugsink vulnerable to unauthenticated remote DoS via crafted Brotli input
HighPUBLISHEDCNA: GitHub_M
CNA base score7.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
02 Description
Bugsink vulnerable to unauthenticated remote DoS via crafted Brotli input
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 0.50% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 42.9% of scored records. A rank, not a probability.
- NVD base score
- 7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVD analysis status
- Deferred. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2025-11-10 21:44Z11 MO AGO
- Last updated
- 2025-11-12 20:14Z11 MO AGO
- Reserved
- 2025-11-05
- Assigning CNA
- GitHub_M
- Record state
- PUBLISHED
- Severity
- High (CVSS 7.5)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-770Allocation of Resources Without Limits or ThrottlingBase
- Data version
- 5.2
- Document digest
- 0ed75ca558db5bd7a0d62c593610a4852481d44b8a87e16d3d7050efb7039966
05 Affected products
VendorProductVersionsPlatforms
06 References
- github.comhttps://github.com/bugsink/bugsink/security/advisories/GHSA-fc2v-vcwj-269v
- github.comhttps://github.com/google/brotli/issues/1327
- github.comhttps://github.com/google/brotli/issues/1375
- github.comhttps://github.com/bugsink/bugsink/pull/266
- github.comhttps://github.com/google/brotli/pull/1234
- github.comhttps://github.com/bugsink/bugsink/commit/3f65544aab3ad5303d97009136640de97b0676a5
- github.comhttps://github.com/google/brotli/commit/67d78bc41db1a0d03f2e763497748f2f69946627
- github.comhttps://github.com/google/brotli/releases/tag/v1.2.0