CVE-2021-47855

HIGH

OpenLiteSpeed 1.7.9 - Stored Cross-Site Scripting in Dashboard Notes Parameter

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-47855. PoCs published by cmOs.

AI-analyzed exploit summary This exploit demonstrates a stored XSS vulnerability in Openlitespeed 1.7.9 by injecting a malicious script into the 'Notes' parameter, which executes when an administrator views the Default Icon.

Description

Openlitespeed 1.7.9 contains a stored cross-site scripting vulnerability in the dashboard's Notes parameter that allows administrators to inject malicious scripts. Attackers can craft a payload in the Notes field during listener configuration that will execute when an administrator clicks on the Default Icon.

Exploits (1)

exploitdb WORKING POC
by cmOs · textwebappsmultiple
https://www.exploit-db.com/exploits/49727

This exploit demonstrates a stored XSS vulnerability in Openlitespeed 1.7.9 by injecting a malicious script into the 'Notes' parameter, which executes when an administrator views the Default Icon.

Classification
Working Poc 90%
Attack Type
Xss
Complexity
Trivial
Reliability
Reliable
Target: Openlitespeed 1.7.9
Auth required
Prerequisites: Administrator access to the Openlitespeed dashboard
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (3)

Core 3
Core References
Exploit, Third Party Advisory exploit
https://www.exploit-db.com/exploits/49727
Various Sources product
https://openlitespeed.org/

Scores

CVSS v3 7.2
EPSS 0.0024
EPSS Percentile 14.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-79
Status published
Products (1)
LiteSpeed Technologies/OpenLiteSpeed 1.7.9
Published Jan 21, 2026
Tracked Since Feb 18, 2026