CVE-2023-0519Public exploitNetwork attack vector

Stored script execution via unescaped interface data

Published Jan 26, 2023 · Updated Mar 31, 2025

Stored XSS in Modoboa before 2.0.4 allows remote attackers to execute script in another user's browser through crafted account or log data. The account-deletion prompt and autocomplete code insert values into HTML without encoding, while the log template marks converted messages as safe. Exploitation requires another user to open an affected interface, where the script runs with that user's Modoboa session context.

CVSS severity7.1
High
EPSS probability0.50%
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 Modoboa before 2.0.4 allows remote attackers to execute script in another user's browser through crafted account or log data. The account-deletion prompt and autocomplete code insert values into HTML without encoding, while the log template marks converted messages as safe. Exploitation requires another user to open an affected interface, where the script runs with that user's Modoboa session context.

The record

CVE
CVE-2023-0519
Published
Jan 26, 2023
Updated
Mar 31, 2025
Vendor
Modoboa
Product
Modoboa
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Jan 26, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 31, 2025Record 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=unspecified <2.0.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

Modoboa · Modoboaversion=unspecified <2.0.4

Published CVSS scores

7.1huntr.devCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
5.4NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
5.1GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter JavaScript

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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