Quick answers
- Is CVE-2026-108755 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-108755 being exploited in the wild.
- How severe is CVE-2026-108755?
- Medium severity, with a CVSS score of 5.3, published 11 October 2026.
- Which products and versions are affected?
- Hatchet through 0.110.5.
- Is there a fix for CVE-2026-108755?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-108755 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-108755?
- Check whether you run Hatchet at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The SnsUpdate handler in the SNS ingestion endpoint buffers the entire request body via io.ReadAll before performing signature verification, allowing unauthenticated attackers to exhaust memory resources. An attacker can repeatedly send arbitrarily large request bodies to POST /api/v1/sns/{tenant}/{event} with any UUID, and the handler will allocate memory for each one before the VerifyPayload check occurs, degrading availability.
Affected products
- Hatchet Hatchet through 0.110.5
Timeline
- 2026-10-11: disclosed