CVE-2026-66358
MEDIUM
5.1
CVSS Score
Published: August 19, 2026 at 04:53 AM UTC
Updated: August 28, 2026 at 04:22 PM UTC
2 products affected across 1 vendoracmailer CGIacmailer DB
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Severity
MEDIUM5.1
Exploit prediction
EPSS 0.3%
SSVC
No known exploit
Description
A cross-site scripting vulnerability exists in acmailer, which may allow an attacker to execute an arbitrary script.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 4.1.2
Affected range stops below 4.1.2, so it looks safe — our inference, not a vendor statement
v < 1.2.2
Affected range stops below 1.2.2, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.
References (2)
Source: cverecord
https://www.acmailer.jp/info/de.cgi?id=119Source: cverecord
https://jvn.jp/en/jp/JVN47716829/SSVC — Action Prioritization
SSVCNo known exploitNot automatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
5.1MEDIUMjpcert
Vector?
Quick Info
StatusDEFERRED
CWE
CWE-79
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