CVE-2020-11036Public exploitNetwork attack vector

Browser script execution via unescaped stored fields

Published May 5, 2020 · Updated Aug 4, 2024

Stored XSS in GLPI before 9.4.6 allows remote authenticated users to execute script in a privileged user's browser through crafted data. The knowledge-base comment view reverses XSS cleaning, while config.class.php echoes the User-Agent raw and DbUtils::formatUserName inserts an unescaped real name into an HTML title attribute. Exploitation requires stored content to be rendered and, for the username path, a privileged user to open the ticket and hover over the crafted name.

CVSS severity7.6
High
EPSS probability0.80%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in GLPI before 9.4.6 allows remote authenticated users to execute script in a privileged user's browser through crafted data. The knowledge-base comment view reverses XSS cleaning, while config.class.php echoes the User-Agent raw and DbUtils::formatUserName inserts an unescaped real name into an HTML title attribute. Exploitation requires stored content to be rendered and, for the username path, a privileged user to open the ticket and hover over the crafted name.

The record

CVE
CVE-2020-11036
Published
May 5, 2020
Updated
Aug 4, 2024
Vendor
GLPI Project
Product
GLPI
Classifications
CWE-79, T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 5, 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?

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

  1. Affected versionversion=< 9.4.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

GLPI Project · GLPIversion=< 9.4.6

Published CVSS scores

7.6GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
3.5NIST NVDAV:N/AC:M/Au:S/C:N/I:P/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 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')
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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