CVE-2022-31494Public exploitNetwork attack vector

Browser script execution via unencoded action parameter

Published Jun 6, 2022 · Updated Aug 3, 2024

Cross-site scripting in LibreHealth EHR Base 2.0.0 allows remote attackers to execute script in a user's browser via the action parameter. The gacl/admin/acl_admin.php page prints the action query value into generated HTML without output encoding, causing crafted markup to execute as script. Exploitation requires a user to open a crafted URL; successful execution can read or modify data available to that user's browser session.

CVSS severity6.1
Medium
EPSS probability1.01%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in LibreHealth EHR Base 2.0.0 allows remote attackers to execute script in a user's browser via the action parameter. The gacl/admin/acl_admin.php page prints the action query value into generated HTML without output encoding, causing crafted markup to execute as script. Exploitation requires a user to open a crafted URL; successful execution can read or modify data available to that user's browser session.

The record

CVE
CVE-2022-31494
Published
Jun 6, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 6, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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

4.3NVDAV:N/AC:M/Au:N/C:N/I:P/A:N
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.

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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