VULNpocalypse

CVE-2026-57443: SCBE-AETHERMOORE Unauthenticated AetherBrowser Ops API Exposes Operator Email Digests

Advisory generated from the CVE record, CISA, Exploit Observer and VEDAS: what it is, whether it is exploited, who is affected, and how to fix and detect it.

Generated by VEDAS. Scores as of 2026-11-01 19:19 UTC. Rebuilt every few hours from cve-scores, CISA KEV and vedas-signatures. How this works and its limits.

What it is

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.

Description quoted from the CVE record (assigned by GitHub_M, published 2026-09-25).

Weakness: CWE-306: Missing Authentication for Critical Function

How it can be exploited

Exploitable over the network with low attack complexity needing no privileges and no user interaction. Impact: confidentiality high, integrity none, availability none. CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CISA assessment (SSVC): CISA assesses that a public proof of concept exists. Automatable: yes. Technical impact: partial.

Public exploit evidence (Exploit Observer)

Also known as: EUVD-2026-87356, GHSA-q986-4x7x-gx39

VEDAS cluster: VEDAS:DIAMONDHYENA

Exploit Observer links 5 pieces of public exploit code or detection modules that name this CVE or one of its aliases.

Exploit code and modules (5)

Code that names this CVE. A repository can be a working exploit, a scanner, a fake or malware; read it before running anything.

Vulnerability databases and vendor advisories (5)

Catalogue entries, not exploit evidence.

4 more references returned by Exploit Observer did not name this CVE or an alias, so they are left out.

VEDAS data as of 2026-11-01T17:12 UTC; fetched 2026-11-02.

Live scores

EPSS
0.007
low predicted chance of attack
VEDAS
0.988
strong exploit evidence
On CISA KEV
Not listed
Detection rule
Nuclei · Suricata

Who is affected

ProductAffectedNot affected
issdandavis SCBE-AETHERMOOREversion >= 4.0.2, < 4.2.1Not stated

Version ranges exactly as the CVE record states them. “Before X” means X is the first fixed version.

Exploit Observer also maps it to: pypi scbe-aethermoore.

How to fix it

No fixed version or vendor advisory is listed in the CVE record yet. Watch the vendor’s security page.

How to detect it

Nuclei template (active check)

SCBE-AetherMoore - Unauthenticated Operator Endpoint (check-email)

SCBE-AetherMoore (versions 4.0.2 up to 4.2.1) exposes the AetherBrowser API server operator endpoint POST /api/ops/check-email without any authentication. The server binds to 0.0.0.0:8100 with CORS allow_origins=[“*”], so any remote attacker (or malicious web page) can invoke the endpoint, triggering the email_reader subprocess and returning email metadata in the JSON response. Fixed builds gate operator endpoints behind an X-Admin-Token check. This template confirms the exposure by invoking the endpoint unauthenticated and matching the subprocess result envelope without the admin-token gate.

Name and description quoted from the template, written by VEDAS.

The template sends 1 request (POST /api/ops/check-email); it decides using dsl matchers. Severity in the template: high. Marked as not yet verified against a live vulnerable target.

Run it against a host you own or are authorised to test:

bash
nuclei -u https://your-host -t CVE-2026-57443.yaml
Show the template (44 lines)
yaml
id: CVE-2026-57443

info:
  name: "SCBE-AetherMoore - Unauthenticated Operator Endpoint (check-email)"
  author: vedas-arpsyndicate
  severity: high
  description: |
    SCBE-AetherMoore (versions 4.0.2 up to 4.2.1) exposes the AetherBrowser API server operator
    endpoint POST /api/ops/check-email without any authentication. The server binds to
    0.0.0.0:8100 with CORS allow_origins=["*"], so any remote attacker (or malicious web page) can
    invoke the endpoint, triggering the email_reader subprocess and returning email metadata in the
    JSON response. Fixed builds gate operator endpoints behind an X-Admin-Token check. This template
    confirms the exposure by invoking the endpoint unauthenticated and matching the subprocess
    result envelope without the admin-token gate.
  reference:
    - https://www.exploit.observer/?keyword=CVE-2026-57443&match=exact
    - https://subdomain.center/?engine=ammonites&keyword=aethermoore&match=exact
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    cvss-score: 7.5
    cve-id: CVE-2026-57443
    cwe-id: CWE-306
  metadata:
    verified: false
    max-request: 1
  tags: cve,cve2026,aethermoore,missing-auth,unauth

http:
  - raw:
      - |
        POST /api/ops/check-email HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/json

        {}

    matchers-condition: and
    matchers:
      - type: dsl
        dsl:
          - 'status_code == 200'
          - 'contains(body, "exit_code") || contains(body, "email_reader.py")'
          - '!contains(body, "X-Admin-Token")'
        condition: and

CVE-2026-57443.yaml on GitHub

Suricata rules (network detection)

1 rule that alert on traffic matching this exploit: VEDAS CVE-2026-57443 SCBE-AetherMoore - Unauthenticated Operator check-email Endpoint Attempt. Add them to your Suricata rule set and reload.

Show the rules
suricata
alert http $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"VEDAS CVE-2026-57443 SCBE-AetherMoore - Unauthenticated Operator check-email Endpoint Attempt"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/api/ops/check-email"; fast_pattern; nocase; classtype:web-application-attack; reference:cve,CVE-2026-57443; reference:url,https://www.exploit.observer/?keyword=CVE-2026-57443&match=exact; reference:url,https://subdomain.center/?engine=ammonites&keyword=aethermoore&match=exact; sid:1081605; rev:1;)

CVE-2026-57443.rules on GitHub

References

Other references

Other databases

Where this comes from

This advisory is generated automatically by VEDAS from: CVE.org record, cve-scores (EPSS and VEDAS), Exploit Observer, vedas-signatures. Text in quotes is reproduced from the source; everything else is a fixed template filled with source fields. Nothing here is written by a language model. Check the vendor advisory before acting, and read how VEDAS and Exploit Observer work, and their limits.