CVE-2023-49034Public exploitNetwork attack vector

Reflected XSS via incomplete HTML tag filtering

Published Feb 20, 2024 · Updated Aug 29, 2024

Reflected XSS in ProjeQtOr 11.0.2 and earlier allows remote attackers to execute script in an authenticated user's browser. The checkValidHtmlText() function in model/Security.php checks for script tags but accepts other executable HTML, and tool/ack.php reflects the resultAck POST value. Exploitation requires an authenticated user to open attacker-controlled HTML, after which injected SVG event code runs with that user's ProjeQtOr session context.

CVSS severity6.1
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

Reflected XSS in ProjeQtOr 11.0.2 and earlier allows remote attackers to execute script in an authenticated user's browser. The checkValidHtmlText() function in model/Security.php checks for script tags but accepts other executable HTML, and tool/ack.php reflects the resultAck POST value. Exploitation requires an authenticated user to open attacker-controlled HTML, after which injected SVG event code runs with that user's ProjeQtOr session context.

The record

CVE
CVE-2023-49034
Published
Feb 20, 2024
Updated
Aug 29, 2024
Vendor
ProjeQtOr
Product
ProjeQtOr
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 20, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 29, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=11.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ProjeQtOr · ProjeQtOrversion=11.0.2

Published CVSS scores

6.1CISA-ADPCVSS: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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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