CVE-2025-62780Public exploitNetwork attack vector

Stored XSS via unchecked Watch API URL

Published Nov 10, 2025 · Updated Nov 10, 2025

Stored XSS in the Watch update API in changedetection.io before 0.50.34 allows remote authenticated users to run JavaScript in a user's browser. The API update path omits the validate_url check used by the UI and stores a javascript: URL that Preview later presents as a link. Exploitation requires a valid API key and a user to open Preview and click the malicious link, exposing browser-accessible data and actions.

CVSS severity3.5
Low
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in the Watch update API in changedetection.io before 0.50.34 allows remote authenticated users to run JavaScript in a user's browser. The API update path omits the validate_url check used by the UI and stores a javascript: URL that Preview later presents as a link. Exploitation requires a valid API key and a user to open Preview and click the malicious link, exposing browser-accessible data and actions.

The record

CVE
CVE-2025-62780
Published
Nov 10, 2025
Updated
Nov 10, 2025
Vendor
changedetection.io
Product
changedetection.io
Classifications
CWE-79, CAPEC-592, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 10, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 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=< 0.50.34

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

changedetection.io · changedetection.ioversion=< 0.50.34

Published CVSS scores

3.5GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/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 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')
CAPEC-592Stored XSS
T1059.007Command and Scripting Interpreter JavaScript/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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