CVE-2025-3650Public exploitNetwork attack vector

Stored XSS via unsanitized link title attribute

Published Sep 12, 2025 · Updated Sep 12, 2025

Stored XSS in the jQuery Colorbox WordPress plugin 4.6.3 and earlier allows remote authenticated users to execute scripts via crafted link titles. When automatic Colorbox handling is enabled, the bundled Colorbox library reads a link's title attribute into the overlay caption without sanitizing attacker-controlled HTML. Contributor access is sufficient to store the payload in a post, but an administrator must preview the post and click the malicious link for script execution in the administrator's browser.

CVSS severity3.5
Low
EPSS probability0.18%
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 jQuery Colorbox WordPress plugin 4.6.3 and earlier allows remote authenticated users to execute scripts via crafted link titles. When automatic Colorbox handling is enabled, the bundled Colorbox library reads a link's title attribute into the overlay caption without sanitizing attacker-controlled HTML. Contributor access is sufficient to store the payload in a post, but an administrator must preview the post and click the malicious link for script execution in the administrator's browser.

The record

CVE
CVE-2025-3650
Published
Sep 12, 2025
Updated
Sep 12, 2025
Vendor
Avatar Uploader Project
Product
Colorbox
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 12, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 12, 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=0 <=4.6.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Avatar Uploader Project · Colorboxversion=0 <=4.6.3

Published CVSS scores

3.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/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.

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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')
T1203Exploitation for Client Execution

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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