CVE-2026-108755
Hatchet through 0.110.5 Unauthenticated Memory Exhaustion via SNS Ingestion Endpoint
- State
- Published
- Severity
- 6.9 Medium
- Published
- Oct 11, 2026
- Updated
- Oct 14, 2026
- Reserved
- Oct 11, 2026
Description
Hatchet through 0.110.5 contains an allocation of resources without limits vulnerability that allows unauthenticated attackers to exhaust memory via the SNS ingestion endpoint. Attackers can send arbitrarily large or concurrent request bodies to POST /api/v1/sns/{tenant}/{event} with any UUID, which the SnsUpdate handler buffers before signature verification, degrading availability.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 5.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L | VulnCheck |
Weaknesses
- CWE-770 Allocation of Resources Without Limits or Throttling
Affected Products
| Product | Versions |
|---|---|
hatchethatchet-dev |
|
References
- https://hackmd.io/@haind03/hatchet-public-sns-unbounded-body-before-signature-dosthird-party-advisory
- https://github.com/hatchet-dev/hatchet/blob/56c617e0da399bc9d8a10d2ba74b4950f8a950b8/api/v1/server/handlers/ingestors/sns.go#L15-L32technical-description
- https://github.com/hatchet-dev/hatchet/blob/56c617e0da399bc9d8a10d2ba74b4950f8a950b8/api/v1/server/middleware/ratelimit/ratelimit.go#L33-L49technical-description
- https://github.com/hatchet-dev/hatchetproduct
- VulnCheck Advisory: Hatchet through 0.110.5 Unauthenticated Memory Exhaustion via SNS Ingestion Endpointthird-party-advisory
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