CVE-2023-6720Network attack vector

Browser script execution via unsanitized stored fields

Published Dec 13, 2023 · Updated Aug 2, 2024

Stored cross-site scripting in Repox 2.3.7 and earlier allows remote authenticated users to run JavaScript in another user's browser. Repox accepts specially crafted JavaScript in field elements without adequate sanitization, stores the payload on the server, and executes it when the application loads. Low-privileged access and a victim's interaction are required; the script executes in the victim's page context, exposing or altering browser-accessible data.

CVSS severity5.5
Medium
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in Repox 2.3.7 and earlier allows remote authenticated users to run JavaScript in another user's browser. Repox accepts specially crafted JavaScript in field elements without adequate sanitization, stores the payload on the server, and executes it when the application loads. Low-privileged access and a victim's interaction are required; the script executes in the victim's page context, exposing or altering browser-accessible data.

The record

CVE
CVE-2023-6720
Published
Dec 13, 2023
Updated
Aug 2, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, CAPEC-592, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 13, 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

5.5INCIBECVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/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

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-592Stored XSS
T1059.007JavaScript/JScript

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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