Resource exhaustion in Hatchet-Dev Hatchet
CVE-2026-108755
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- hackmd.io/@haind03/hatchet-public-sns-unbounded-body-before-signature-dos (third-party-advisory)
- github.com/hatchet-dev/hatchet/blob/56c617e0da399bc9d8a10d2ba74b4950f8a950b8/ap… (technical-description)
- github.com/hatchet-dev/hatchet/blob/56c617e0da399bc9d8a10d2ba74b4950f8a950b8/ap… (technical-description)
- github.com/hatchet-dev/hatchet (product)
- www.vulncheck.com/advisories/hatchet-through-0.110.5-unauthenticated-memory-exh… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-108755?
- CVE-2026-108755 is a medium-severity vulnerability in Hatchet-Dev Hatchet, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 5.3/10. Published 2026-10-11.
- How severe is CVE-2026-108755?
- Medium severity. CVSS v3 base score is 5.3 out of 10.