CVE-2025-24598Network attack vector

Unauthenticated reflected script execution

Published Feb 4, 2025 · Updated May 11, 2026

Reflected XSS in Brandt OSS WP Mailster 1.8.17.0 and earlier allows remote attackers to run scripts via a crafted request. Public records do not identify the affected request parameter or code path; they report insufficient input sanitization and output escaping. Exploitation requires a user to follow a crafted link or perform an equivalent action, causing attacker-supplied script to execute in that user's browser under the site's origin.

CVSS severity7.1
High
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in Brandt OSS WP Mailster 1.8.17.0 and earlier allows remote attackers to run scripts via a crafted request. Public records do not identify the affected request parameter or code path; they report insufficient input sanitization and output escaping. Exploitation requires a user to follow a crafted link or perform an equivalent action, causing attacker-supplied script to execute in that user's browser under the site's origin.

The record

CVE
CVE-2025-24598
Published
Feb 4, 2025
Updated
May 11, 2026
Vendor
Brandt OSS
Product
WP Mailster
Classifications
CWE-79, CAPEC-591, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 4, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=0 <=1.8.17.0 changes=[{"at":"1.8.18.0","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Brandt OSS · WP Mailsterversion=0 <=1.8.17.0 changes=[{"at":"1.8.18.0","status":"unaffected"}]

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
7.1PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-591Reflected XSS
T1203Exploitation for Client Execution

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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