TI-2024-21760 Aliases CVE-2024-32890

Stored Cross-site Scripting in results JSON API in librespeed/speedtest

MEDIUM 60CWE-79Published 2024-05-01 · Updated 2024-08-21

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

librespeed/speedtest is an open source, self-hosted speed test for HTML5. In affected versions missing neutralization of the ISP information in a speedtest result leads to stored Cross-site scripting in the JSON API. The `processedString` field in the `ispinfo` parameter is missing neutralization. It is stored when a user submits a speedtest result to the telemetry API (`results/telemetry.php`) and returned in the JSON API (`results/json.php`). This vulnerability has been introduced in commit 3937b94. This vulnerability affects LibreSpeed speedtest instances running version 5.2.5 or higher which have telemetry enabled and has been addressed in version 5.3.1. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00523 44th percentileScored 2026-11-07

Fix Fixed speedtest (librespeed): 5.3.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
librespeed	speedtest	5.2.5 to before 5.3.1	5.3.1	Patch available	CNA

speedtest Vendorlibrespeed Affected 5.2.5 to before 5.3.1 Fixed in 5.3.1 Patch available CNA

CPE names CISA-ADP · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:librespeed:speedtest::::::::	—	—	librespeed

cpe:2.3:a:librespeed:speedtest:*:*:*:*:*:*:*:* Versions — — ·librespeed

Remediation

Fix · CNA speedtest (librespeed) Fixed in 5.3.1

Timeline

2026-10-02 Threatist record created from CVE-2024-32890

References

Other 3

TI-2022-04546 librespeed speedtest stats.php cross site scripting CVSS 3.1MEDIUM 6.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences