CVE-2023-34599Public exploitNetwork attack vector

Browser script execution via unescaped query parameters

Published Jun 29, 2023 · Updated Nov 26, 2024

Reflected cross-site scripting in Gibbon 25.0.0 allows remote attackers to execute JavaScript in a user's browser via crafted URLs. The affected module pages return allUsers, currentDate, identifier, search, and subpage query values into executable HTML contexts without neutralizing markup or event-handler syntax. A user must open the crafted URL and access the targeted module page; successful exploitation exposes browser-session data and permits actions available to that user.

CVSS severity6.1
Medium
EPSS probability1.85%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected cross-site scripting in Gibbon 25.0.0 allows remote attackers to execute JavaScript in a user's browser via crafted URLs. The affected module pages return allUsers, currentDate, identifier, search, and subpage query values into executable HTML contexts without neutralizing markup or event-handler syntax. A user must open the crafted URL and access the targeted module page; successful exploitation exposes browser-session data and permits actions available to that user.

The record

CVE
CVE-2023-34599
Published
Jun 29, 2023
Updated
Nov 26, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 29, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 26, 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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.1NIST NVDCVSS: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.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

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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