CVE-2023-38347Public exploitNetwork attack vector

Browser-session compromise via archived email JavaScript

Published Aug 9, 2023 · Updated Oct 10, 2024

Stored XSS in LWsystems Benno MailArchiv 2.10.1 allows remote attackers to run JavaScript when a user views a crafted email. The benno-rest path archives attacker-supplied HTML email content and renders its JavaScript in the Benno Web-App without neutralization. Execution requires a user to log in and open the archived message; plaintext HTML login preserves exposure to data and actions available in that browser session.

CVSS severity6.1
Medium
EPSS probability0.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in LWsystems Benno MailArchiv 2.10.1 allows remote attackers to run JavaScript when a user views a crafted email. The benno-rest path archives attacker-supplied HTML email content and renders its JavaScript in the Benno Web-App without neutralization. Execution requires a user to log in and open the archived message; plaintext HTML login preserves exposure to data and actions available in that browser session.

The record

CVE
CVE-2023-38347
Published
Aug 9, 2023
Updated
Oct 10, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 9, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 10, 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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

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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