CVE-2025-31615Network attack vector

Stored script execution via missing nonce validation

Published Mar 31, 2025 · Updated Apr 28, 2026

Stored XSS in Big Lemon Creative Simple Contact Forms 1.6.4 and earlier allows remote attackers to inject scripts through forged requests. The affected function omits correct WordPress nonce validation, allowing a forged request to update settings with script content that is stored and later rendered. Exploitation requires an authenticated administrator to visit an attacker-controlled link or page, after which the stored script executes in a visitor's browser.

CVSS severity7.1
High
EPSS probability0.23%
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 Big Lemon Creative Simple Contact Forms 1.6.4 and earlier allows remote attackers to inject scripts through forged requests. The affected function omits correct WordPress nonce validation, allowing a forged request to update settings with script content that is stored and later rendered. Exploitation requires an authenticated administrator to visit an attacker-controlled link or page, after which the stored script executes in a visitor's browser.

The record

CVE
CVE-2025-31615
Published
Mar 31, 2025
Updated
Apr 28, 2026
Vendor
Big Lemon Creative
Product
Simple Contact Forms
Classifications
CWE-79, CAPEC-592, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 31, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 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 <=1.6.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Big Lemon Creative · Simple Contact Formsversion=0 <=1.6.4

Published CVSS scores

7.1PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
4.3WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-592Stored XSS
T1189Drive-by Compromise

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

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Your stack

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