CVE-2023-2553Public exploitNetwork attack vector

Authenticated cross-user script execution via unescaped Select2 text

Published May 5, 2023 · Updated Feb 12, 2025

Stored XSS in the Select2 interface in Unilogies Bumsys before 2.2.0 allows remote authenticated users to execute script in another user's browser. The assets/js/bms.js templateSelection and templateResult callbacks return stored state.text values as HTML instead of encoding them as text. A low-privileged user must save crafted option text and another user must load the affected Select2 view, causing script execution in that user's session.

CVSS severity5.4
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 XSS in the Select2 interface in Unilogies Bumsys before 2.2.0 allows remote authenticated users to execute script in another user's browser. The assets/js/bms.js templateSelection and templateResult callbacks return stored state.text values as HTML instead of encoding them as text. A low-privileged user must save crafted option text and another user must load the affected Select2 view, causing script execution in that user's session.

The record

CVE
CVE-2023-2553
Published
May 5, 2023
Updated
Feb 12, 2025
Vendor
Unilogies
Product
Bumsys
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 5, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 12, 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 <2.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Unilogies · Bumsysversion=unspecified <2.2.0

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
4.8huntr.devCVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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')
T1059.007JavaScript/JScript

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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