CVE-2023-25810Public exploitNetwork attack vector

Browser script execution via unneutralized status description

Published Feb 21, 2023 · Updated Mar 10, 2025

Stored cross-site scripting in Uptime Kuma before 1.20.0 allows remote authenticated users to execute JavaScript through a status-page description. The status-page editor stores a crafted description and later renders its unneutralized HTML, allowing embedded script to execute when the page is saved or viewed. Low-privileged access to edit a status page is required, and a viewer must load the affected page; execution occurs in that viewer's browser context.

CVSS severity6.3
Medium
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Stored cross-site scripting in Uptime Kuma before 1.20.0 allows remote authenticated users to execute JavaScript through a status-page description. The status-page editor stores a crafted description and later renders its unneutralized HTML, allowing embedded script to execute when the page is saved or viewed. Low-privileged access to edit a status page is required, and a viewer must load the affected page; execution occurs in that viewer's browser context.

The record

CVE
CVE-2023-25810
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

Compare your product and version with the public record. A matching version still requires validation against your environment.

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

6.3GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:N
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/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
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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo