CVE-2022-4957Network attack vector

Script execution via unescaped result ID

Published Dec 3, 2023 · Updated Jun 3, 2025

Reflected XSS in LibreSpeed Speedtest 5.2.0 through 5.2.4 allows remote attackers to execute script via the stats.php id parameter. When a result lookup fails, results/stats.php inserts the unescaped id value into an HTML error message instead of encoding it. Exploitation requires an authenticated victim to open a crafted URL on an instance exposing the optional results interface, giving the script that page's browser context.

CVSS severity6.1
Medium
EPSS probability0.56%
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 LibreSpeed Speedtest 5.2.0 through 5.2.4 allows remote attackers to execute script via the stats.php id parameter. When a result lookup fails, results/stats.php inserts the unescaped id value into an HTML error message instead of encoding it. Exploitation requires an authenticated victim to open a crafted URL on an instance exposing the optional results interface, giving the script that page's browser context.

The record

CVE
CVE-2022-4957
Published
Dec 3, 2023
Updated
Jun 3, 2025
Vendor
LibreSpeed
Product
LibreSpeed Speedtest
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 3, 2023CVE publishedPublication date reported by the CVE source.
  2. Jun 3, 2025Record 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=5.2.0
  2. Affected versionversion=5.2.1
  3. Affected versionversion=5.2.2
  4. Affected versionversion=5.2.3
  5. Affected versionversion=5.2.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

LibreSpeed · LibreSpeed Speedtestversion=5.2.0; version=5.2.1; version=5.2.2; version=5.2.3; version=5.2.4

Published CVSS scores

3.5VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
4.0VulDBAV:N/AC:L/Au:S/C:N/I:P/A:N
6.1NISTCVSS: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 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 exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

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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