hatchet-dev Hatchet up to 0.110.5 SnsUpdate handler {event} allocation of resources

Summaryinfo

A vulnerability marked as critical has been reported in hatchet-dev Hatchet up to 0.110.5. This issue affects some unknown processing of the file /api/v1/sns/{tenant}/{event} of the component SnsUpdate handler. The manipulation leads to allocation of resources. This vulnerability is documented as CVE-2026-108755. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in hatchet-dev Hatchet up to 0.110.5 and classified as critical. This issue affects an unknown code of the file /api/v1/sns/{tenant}/{event} of the component SnsUpdate handler. The manipulation with an unknown input leads to a allocation of resources vulnerability. Using CWE to declare the problem leads to CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. Impacted is availability. The summary by CVE is:

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.

It is possible to read the advisory at hackmd.io. The identification of this vulnerability is CVE-2026-108755 since 10/11/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• hatchet-dev

Name

• Hatchet

Version

• 0.110.0
• 0.110.1
• 0.110.2
• 0.110.3
• 0.110.4
• 0.110.5

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion