CVE-2023-48115Public exploitNetwork attack vector

Stored DOM XSS via paired message fields

Published Dec 21, 2023 · Updated Aug 2, 2024

Stored DOM XSS in SmarterTools SmarterMail 8495 through 8664 allows remote authenticated users to execute script in webmail. The message-processing path skips its XSS protection when a request supplies both messageHTML and messagePlainText, leaving a crafted email body stored. A mailbox user must submit the crafted fields and another user must view the stored message; the script then runs in the viewer's browser context.

CVSS severity5.4
Medium
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored DOM XSS in SmarterTools SmarterMail 8495 through 8664 allows remote authenticated users to execute script in webmail. The message-processing path skips its XSS protection when a request supplies both messageHTML and messagePlainText, leaving a crafted email body stored. A mailbox user must submit the crafted fields and another user must view the stored message; the script then runs in the viewer's browser context.

The record

CVE
CVE-2023-48115
Published
Dec 21, 2023
Updated
Aug 2, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 21, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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

Public exploit references

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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