CVE-2026-108755

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.

References

https://www.vulncheck.com/advisories/hatchet-through-0.110.5-unauthenticated-memory-exhaustion-via-sns-ingestion-endpoint

https://hackmd.io/@haind03/hatchet-public-sns-unbounded-body-before-signature-dos

https://github.com/hatchet-dev/hatchet/blob/56c617e0da399bc9d8a10d2ba74b4950f8a950b8/api/v1/server/middleware/ratelimit/ratelimit.go#L33-L49

https://github.com/hatchet-dev/hatchet/blob/56c617e0da399bc9d8a10d2ba74b4950f8a950b8/api/v1/server/handlers/ingestors/sns.go#L15-L32

https://github.com/hatchet-dev/hatchet

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-96920

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4