CVE-2023-25811Public exploitNetwork attack vector

Browser script execution via status-page name

Published Feb 21, 2023 · Updated Mar 10, 2025

Stored cross-site scripting in Louis Lam Uptime Kuma 1.19.6 and earlier allows remote authenticated users to execute script via a status-page name. The new-status-page name flow fails to neutralize injected script markup before browser rendering, so the stored payload runs during creation and later selection. An authenticated account is required to create the value, and browser interaction with the status page triggers code execution.

CVSS severity6.3
Medium
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in Louis Lam Uptime Kuma 1.19.6 and earlier allows remote authenticated users to execute script via a status-page name. The new-status-page name flow fails to neutralize injected script markup before browser rendering, so the stored payload runs during creation and later selection. An authenticated account is required to create the value, and browser interaction with the status page triggers code execution.

The record

CVE
CVE-2023-25811
Published
Feb 21, 2023
Updated
Mar 10, 2025
Vendor
Louis Lam
Product
Uptime Kuma
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 21, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 10, 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=< 1.20.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Louis Lam · Uptime Kumaversion=< 1.20.0

Published CVSS scores

5.4NISTCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
6.3GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:H/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')
T1059.007JavaScript/JScript

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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