Vulnerability in Automatisch
CVE-2026-81033
Automatisch reveals whether an address is registered through the response to its forgot-password request. The controller at packages/backend/src/controllers/internal/api/v1/users/forgot-password.js looks the address up and chains a not-found throw onto the query, so an address with no account raises an error that the global handler renders as a not-found status, while a registered address proceeds to send the reset message and returns no-content. The route is mounted without authentication. Submitting candidate addresses and comparing the two status codes therefore establishes which addresses hold accounts, with no credential and no rate limiting in the path.
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:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (39.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 39.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.002
Affected products
Weakness classification (CWE)
References
- github.com/automatisch/automatisch (product)
- github.com/automatisch/automatisch/issues/2713 (issue-tracking)
- github.com/automatisch/automatisch/blob/v0.15.0/packages/backend/src/controller… (technical-description)
- www.vulncheck.com/advisories/automatisch-through-0.15.0-user-enumeration-via-fo… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-81033?
- CVE-2026-81033 is a medium-severity vulnerability in Automatisch, classified under Observable Response Discrepancy. CVSS score: 5.3/10. Published 2026-08-26.
- How severe is CVE-2026-81033?
- Medium severity. CVSS v3 base score is 5.3 out of 10.