What is the CVSS score of CVE-2026-48876?

CVE-2026-48876 has a CVSS 3.1 base score of 7.1 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L. EPSS exploitation probability: 0.2%.

Which versions of Stop Spammers are affected by CVE-2026-48876?

Stop Spammers WordPress plugin versions 2026.3 and earlier contain a high-severity cross-site scripting vulnerability enabling unauthenticated script injection attacks against website visitors.

How to fix or mitigate CVE-2026-48876?

Within 24 hours: Identify all WordPress installations running Stop Spammers 2026.3 or earlier and assess exposure based on user traffic and data handled. Within 7 days: Disable the Stop Spammers plugin or deploy Web Application Firewall rules blocking XSS patterns; migrate to alternative spam-filtering solutions if operationally feasible. Within 30 days: Monitor vendor communications and Patchstack for security updates; apply any released patch immediately upon availability after regression testing.

Stop Spammers CVE-2026-48876

EUVD-2026-36853 HIGH

Cross-site Scripting (XSS) (CWE-79)

2026-06-15 Patchstack

GHSA-6hjw-x58g-gmf7

XSS Stop Spammers

7.1

CVSS 3.1 · Vendor: Patchstack

Severity by source

Vendor (Patchstack) PRIMARY

7.1 HIGH

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

vuln.today AI

7.1 HIGH

Network-reachable WordPress plugin XSS, no auth needed (PR:N), victim must trigger payload (UI:R), script crosses plugin boundary into site context (S:C), partial CIA impact typical of XSS.

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

4.0 AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

Primary rating from Vendor (Patchstack).

CVSS VectorVendor: Patchstack

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

Low

Lifecycle Timeline

Analysis Generated

Jun 15, 2026 - 21:46 vuln.today

DescriptionCVE.org

Unauthenticated Cross Site Scripting (XSS) in Stop Spammers <= 2026.3 versions.

AnalysisAI

Reflected/stored cross-site scripting in the WordPress plugin Stop Spammers (versions 2026.3 and earlier) allows unauthenticated remote attackers to inject malicious scripts that execute in a victim's browser when they interact with crafted content. The flaw carries a CVSS 3.1 base score of 7.1 due to scope change (S:C), and no public exploit identified at time of analysis, though Patchstack has catalogued the issue in its WordPress vulnerability database.

Technical ContextAI

Stop Spammers is a popular WordPress plugin (vendor identifier 'web_guy') designed to block spam comments, registrations, and login attempts. The root cause is CWE-79 (Improper Neutralization of Input During Web Page Generation), meaning the plugin renders attacker-controlled input into HTML without sufficient encoding or sanitization. Because WordPress plugins typically run within the wp-admin or theme rendering pipeline, an XSS payload executes with the privileges of whichever user views the affected page, enabling session theft, admin account hijacking, or arbitrary administrative actions via forged requests. The CPE 'cpe:2.3:a:web_guy:stop_spammers:*' indicates all versions through 2026.3 are in scope.

RemediationAI

Patch available per vendor advisory - upgrade Stop Spammers to a version newer than 2026.3 as published on the WordPress plugin repository, consulting Patchstack's advisory at https://patchstack.com/database/wordpress/plugin/stop-spammer-registrations-plugin/vulnerability/wordpress-stop-spammers-plugin-2026-3-cross-site-scripting-xss-vulnerability for the exact fixed version. Until upgrade is possible, deploy a WordPress-aware WAF (Patchstack, Wordfence, or equivalent) with virtual-patching rules for this CVE, which will filter the offending parameters at the edge with negligible site impact. If neither option is viable, temporarily deactivate the Stop Spammers plugin - the trade-off is loss of spam-blocking functionality and a likely surge in registration/comment spam, so pair it with native WordPress comment moderation and reCAPTCHA on registration forms.