CVE-2026-126405
Coder from 2.38.0 before 2.38.4 Memory Exhaustion DoS via Web Push
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
Coder 2.21.0 before 2.29.24, 2.30.0 before 2.34.16, 2.35.0 before 2.36.11, 2.37.0 before 2.37.8, and 2.38.0 before 2.38.4 reads Web Push endpoint responses in webpushSend with io.ReadAll, without a size limit or client timeout. Any authenticated user can register a subscription via POST /api/v2/users/{user}/webpush/subscription pointing to a server returning an endless body, exhausting coderd memory and crashing the API, dashboard, and workspace connections.
| CWE | CWE-400 |
| Vendor | coder |
| Product | coder |
| Published | Nov 13, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
coder / coder
2.38.0 < 2.38.4
coder / coder
2.37.0 < 2.37.8
coder / coder
2.36.0 < 2.36.11
coder / coder
2.30.0 < 2.34.16
coder / coder
2.21.0 < 2.29.24
coder / coder
2.35.0 < 2.36.0
References
Credits
BobbyHo