Opens the password-reset API without credentials. Advisory
Detect
Fingerprints SmarterMail and flags CVE-2026-23760 by version.
Report
Counts checked, product, affected, and confirmed.
Targets
Hosts, IPs, or URLs, one per line. Empty input uses localhost.
Overview
This workflow finds SmarterTools SmarterMail and sorts each host by whether its version falls in the CVE-2026-23760 range. SmarterMail is the mail console on a lot of hosted domains. CVE-2026-23760 is authentication bypass that CISA listed on KEV. The check reads the login and flags every build before 100.0.9511. Give it hostnames, IP addresses, or URLs you are authorised to test. The workflow fingerprints the product from the public page (title match on SmarterMail), reads the version from /login with a fallback to the root body, and compares that number to the range table in the graph. Every host comes back affected or not, so a fleet advisory becomes an evidenced list for exposure management. CVE-2026-23760 is on CISA KEV (known exploited). Version flag is first. Hosts in range get a second node that opens the password-reset API without credentials. It does not reset a password or create a mailbox.
Run it on a schedule when the estate changes. New hosts and delayed patch windows are the reason the same check is worth more the second week than the first.
Pipeline
Read the target list. Hosts, URLs, or ranges, one per line, become the scope.
Fingerprint each host as SmarterTools SmarterMail from the public page title, then GET /login and parse the version. A host counts as affected only when the fingerprint matches and the version is inside the encoded range.
Confirm only those flagged hosts by opening the password-reset API without credentials.
Collect the per-host rows: product match, version, affected flag, confirmed flag, and any fetch error.
Emit the summary counts: hosts checked, product hits, affected, confirmed, and errors.
Inputs
Target list. Hostnames, IP addresses, CIDR ranges, or URLs, one per line. JSONL with a url field also works. Point it at scope you are authorised to test. Fingerprint is read-only GET. Confirm opens the password-reset API without credentials, and only after the version flag.
Outputs
results.jsonl. One row per host: URL, whether SmarterTools SmarterMail was detected, the version read, the affected flag, and whether the password-reset confirm succeeded.
summary.json. Counts across the list: targets, product hits, affected, and errors.
Integrations
HTTP. Unauthenticated GET to the product root and /login. Confirm opens the password-reset API without credentials, only on flagged hosts.
Sample output
The records below are illustrative and do not come from a real run. They show one SmarterTools SmarterMail host inside the CVE-2026-23760 range, one patched host, and one host that is not the product.
Which SmarterTools SmarterMail versions does this flag?
every build before 100.0.9511. 100.0.9511 and later is the floor the graph treats as not affected. The compare uses the version the product itself served.
Does a flagged host mean CVE-2026-23760 was exploited?
No. A flagged row is patch-lag against the range table. Confirm only opens the password-reset API without credentials. Treat a confirmed row as evidence the API still answers, not as proof someone already used it.
Is this check safe on production?
Yes. Fingerprint is read-only GET. Confirm opens the password-reset API without credentials, only on hosts already in range. It does not log in, reset a password, or create a mailbox.
Does the check need credentials?
No. It fingerprints the public page and reads /login the way an external scanner would.
What is CVE-2026-23760?
Authentication bypass in SmarterMail. CISA listed it on KEV. The floor in the graph is 100.0.9511. This workflow flags by version, then confirms by opening the password-reset API without credentials.