CVE-2023-1527Public exploitNetwork attack vector

Session compromise via unsafe javascript links

Published Mar 21, 2023 · Updated Feb 27, 2025

Cross-site scripting in TSolucio coreBOS before 8.0 allows remote authenticated users to execute JavaScript through crafted link markup. The vtlib_purify function in include/utils/VtlibUtils.php permits an anchor href containing the javascript scheme to survive HTML purification. A victim must follow the rendered link; the script then runs in the coreBOS origin and can read or alter data available to that session.

CVSS severity5.4
Medium
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in TSolucio coreBOS before 8.0 allows remote authenticated users to execute JavaScript through crafted link markup. The vtlib_purify function in include/utils/VtlibUtils.php permits an anchor href containing the javascript scheme to survive HTML purification. A victim must follow the rendered link; the script then runs in the coreBOS origin and can read or alter data available to that session.

The record

CVE
CVE-2023-1527
Published
Mar 21, 2023
Updated
Feb 27, 2025
Vendor
TSolucio
Product
coreBOS
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 21, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 27, 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 <8.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

TSolucio · coreBOSversion=unspecified <8.0

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
8.3huntr.devCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 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')
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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