Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
The Go package github.com/hatchet-dev/hatchet is affected in versions before 0.91.2. The source gives few details: its SNS UnsubscribeConfirmation handler does not verify the signature of the UnsubscribeURL, which allows server-side request forgery. An attacker who can send requests to the handler could cause the server to make requests to URLs of their choosing. Upgrade to version 0.91.2 or later.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 4.1 | Medium | 3.1 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0031, the 24th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 22 Sept 2026, 20:34 UTC Confirmed by GitHub Advisory Database
- 31 Oct 2026, 14:12 UTC First seen by agentprime
- 31 Oct 2026, 14:12 UTC Confirmed by OSV