A cross-site scripting vulnerability exists in acmailer, which may allow an attacker to execute an arbitrary script.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction Active

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact Low

Subsequent System Integrity Impact Low

Subsequent System Availability Impact None

No CVSS v3.1

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Extra Innovation Inc. acmailer CGI unaffected
Version Status Constraints
0 affected < 4.1.2
Extra Innovation Inc. acmailer DB unaffected
Version Status Constraints
0 affected < 1.2.2

No data.

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Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://jvn.jp/en/jp/JVN47716829/ cve-icon cve-icon
https://www.acmailer.jp/info/de.cgi?id=119 cve-icon cve-icon
History

Wed, 19 Aug 2026 07:15:00 +0000

Type Values Removed Values Added
Title Acmailer Cross‑Site Scripting Vulnerability

Wed, 19 Aug 2026 05:00:00 +0000

Type Values Removed Values Added
Description A cross-site scripting vulnerability exists in acmailer, which may allow an attacker to execute an arbitrary script.
Weaknesses CWE-79
References
Metrics cvssV3_0

{'score': 6.1, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}

cvssV4_0

{'score': 5.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: jpcert

Published:

Updated: 2026-08-19T04:53:33.355Z

Reserved: 2026-08-10T06:57:22.734Z

Link: CVE-2026-66358

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-19T05:17:05.647

Modified: 2026-08-19T05:17:05.647

Link: CVE-2026-66358

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-19T07:00:12Z

Weaknesses