CVE-2026-28181Network attack vector

Subscriber-level disclosure of sensitive data

Published Aug 13, 2026 · Updated Aug 13, 2026

Missing authorization in AcyMailing SMTP Newsletter 10.11.1 and earlier allows remote authenticated users to read sensitive data. Patchstack has not disclosed the affected function, resource, request parameter, or specific authorization check that is omitted. Subscriber access is required, and the published assessment limits impact to confidentiality with no integrity or availability loss.

CVSS severity6.5
Medium
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in AcyMailing SMTP Newsletter 10.11.1 and earlier allows remote authenticated users to read sensitive data. Patchstack has not disclosed the affected function, resource, request parameter, or specific authorization check that is omitted. Subscriber access is required, and the published assessment limits impact to confidentiality with no integrity or availability loss.

The record

CVE
CVE-2026-28181
Published
Aug 13, 2026
Updated
Aug 13, 2026
Vendor
AcyMailing Newsletter Team
Product
AcyMailing
Classifications
CWE-862, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a <=10.11.1 changes=[{"at":"11.0.0","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

AcyMailing Newsletter Team · AcyMailingversion=n/a <=10.11.1 changes=[{"at":"11.0.0","status":"unaffected"}]

Published CVSS scores

6.5PatchstackCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1213Data from Information Repositories

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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