SCBE-AETHERMOORE Unauthenticated AetherBrowser Ops API Exposes Operator Email Digests
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-306.
Summary
SCBE-AETHERMOORE is a geometric AI governance and evaluation framework. Starting in version 4.0.2 and prior to version 4.2.1, the AetherBrowser API server (`scripts/aetherbrowser/api_server.py`) exposes the `POST /api/ops/check-email` endpoint without any authentication. Any remote attacker can call this endpoint and trigger execution of the `email_reader.py` subprocess, which connects to configured ProtonMail or Gmail accounts via IMAP and returns email metadata (sender, subject, body snippet) in the JSON response. The server binds to `0.0.0.0:8100` by default with CORS set to `allow_origins=["*"]`, making it reachable from any network or browser origin. Version 4.2.1 patches the issue.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| issdandavis | SCBE-AETHERMOORE | 4.0.2 to before 4.2.1 | 4.2.1 | Patch available | CNA |
| — | scbe-aethermoore (PyPI) | 4.0.2 to before 4.2.1 | 4.2.1 | Patch available | GHSA-q986-4x7x-gx39 |
- SCBE-AETHERMOORE Vendorissdandavis Affected 4.0.2 to before 4.2.1 Fixed in 4.2.1 Patch available CNA
- scbe-aethermoore (PyPI) Vendor— Affected 4.0.2 to before 4.2.1 Fixed in 4.2.1 Patch available GHSA-q986-4x7x-gx39
Remediation
- Fix · CNA SCBE-AETHERMOORE (issdandavis) Fixed in 4.2.1
- Fix · GHSA-q986-4x7x-gx39 scbe-aethermoore (PyPI) Fixed in 4.2.1 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-57443
- 2026-10-03 Alias added: GHSA-q986-4x7x-gx39
- 2026-10-25 EPSS moved to the 50th–90th percentile
References
Other 6
- https://github.com/issdandavis/SCBE-AETHERMOORE/security/advisories/GHSA-q986-4x7x-gx39
- https://github.com/issdandavis/SCBE-AETHERMOORE/commit/ca833795e01eab060e92572e5f667c0c136b8c1e
- https://github.com/issdandavis/SCBE-AETHERMOORE/commit/de7779b722c501dbcf4eae95dd51bb3984506fb1
- https://github.com/issdandavis/SCBE-AETHERMOORE/pull/2287
- https://github.com/issdandavis/SCBE-AETHERMOORE
- https://github.com/issdandavis/SCBE-AETHERMOORE/releases/tag/v4.2.1
Sources
- CVE-2026-57443 · CVE Program
- CVE-2026-57443 · NVD
- FIRST EPSS
- GHSA-q986-4x7x-gx39 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences