CVE-2025-48311Network attack vector

Stored XSS via missing nonce validation

Published Aug 28, 2025 · Updated May 12, 2026

CSRF in OffClicks Invisible Optin 1.0 and earlier allows remote attackers to store malicious scripts through a forged settings request. The plugin's settings-update function persists request data without correctly validating a WordPress nonce, allowing attacker-controlled script content to be stored. Exploitation requires an authenticated administrator to follow a crafted link or submit a forged form, after which the stored script executes for visitors.

CVSS severity7.1
High
EPSS probability0.12%
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

CSRF in OffClicks Invisible Optin 1.0 and earlier allows remote attackers to store malicious scripts through a forged settings request. The plugin's settings-update function persists request data without correctly validating a WordPress nonce, allowing attacker-controlled script content to be stored. Exploitation requires an authenticated administrator to follow a crafted link or submit a forged form, after which the stored script executes for visitors.

The record

CVE
CVE-2025-48311
Published
Aug 28, 2025
Updated
May 12, 2026
Vendor
OffClicks
Product
Invisible Optin
Classifications
CWE-352, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 28, 2025CVE publishedPublication date reported by the CVE source.
  2. May 12, 2026Record 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 <=1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

OffClicks · Invisible Optinversion=0 <=1.0

Published CVSS scores

7.1PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
T1204.001Malicious Link

Public exploit references

No public exploit references are available in this record.

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