CVE-2023-2309Public exploitNetwork attack vector

Reflected XSS via unescaped debug parameters

Published Jul 24, 2023 · Updated Oct 24, 2024

Reflected XSS in AdvancedCoding wpForo Forum before 2.1.9 allows remote attackers to execute script in a visitor's browser via a crafted forum URL. With debug mode enabled, frontend diagnostic output renders a supplied request parameter without HTML escaping or output encoding. Exploitation requires a visitor to follow the crafted URL, and the injected script runs only in that visitor's browser context.

CVSS severity6.1
Medium
EPSS probability0.84%
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 AdvancedCoding wpForo Forum before 2.1.9 allows remote attackers to execute script in a visitor's browser via a crafted forum URL. With debug mode enabled, frontend diagnostic output renders a supplied request parameter without HTML escaping or output encoding. Exploitation requires a visitor to follow the crafted URL, and the injected script runs only in that visitor's browser context.

The record

CVE
CVE-2023-2309
Published
Jul 24, 2023
Updated
Oct 24, 2024
Vendor
AdvancedCoding
Product
wpForo Forum
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 24, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 24, 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=0 <2.1.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

AdvancedCoding · wpForo Forumversion=0 <2.1.9

Published CVSS scores

6.1NVDCVSS: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')
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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