CVE-2020-10413Public exploitNetwork attack vector

Authenticated reflected XSS via unescaped request URI

Published Mar 12, 2020 · Updated Aug 4, 2024

Reflected XSS in PHPKB Standard Multi-Language 9 allows remote authenticated users to execute script through a crafted admin/import-html.php URI. The check-authority.php code derives lang_header from the final REQUEST_URI segment, and admin/header.php emits that value unescaped into an onclick JavaScript argument. Writer, Editor, or Superuser access and a victim opening the crafted URI are required; the script runs within the victim's PHPKB origin.

CVSS severity4.8
Medium
EPSS probability0.61%
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 PHPKB Standard Multi-Language 9 allows remote authenticated users to execute script through a crafted admin/import-html.php URI. The check-authority.php code derives lang_header from the final REQUEST_URI segment, and admin/header.php emits that value unescaped into an onclick JavaScript argument. Writer, Editor, or Superuser access and a victim opening the crafted URI are required; the script runs within the victim's PHPKB origin.

The record

CVE
CVE-2020-10413
Published
Mar 12, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 12, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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 privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

3.5NIST NVDAV:N/AC:M/Au:S/C:N/I:P/A:N
4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/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
Privilegesauthenticated
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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