What is the CVSS score of CVE-2026-19500?

CVE-2026-19500 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.5%.

Which versions of SureForms are affected by CVE-2026-19500?

Brainstorm Force SureForms versions before 2.1.3 enable unauthenticated attackers to exhaust server resources, triggering site-wide errors and blocking administrator access to form management…. A patch is available.

Is there a public PoC exploit available for CVE-2026-19500?

Yes, a public proof-of-concept exploit is available for CVE-2026-19500. Prioritise patching immediately. EPSS: 0.5%.

How to fix or mitigate CVE-2026-19500?

Within 24 hours, audit all WordPress instances to identify the installed version of Brainstorm Force SureForms and disable the plugin if running a version prior to 2.1.3. Within 7 days, upgrade to SureForms version 2.1.3 or later across all environments (development, staging, production), testing in a non-production environment first to confirm compatibility. Within 30 days, if production patching has not been completed, implement interim rate limiting rules at your web application firewall to throttle form submissions per IP address, and establish monitoring to detect exploit attempts.

SureForms CVE-2026-19500

EUVD-2026-60968 HIGH

Uncontrolled Resource Consumption (CWE-400)

2026-08-18 certcc

GHSA-xc26-q9g5-f99x

Denial Of Service Sureforms

7.5

CVSS 3.1 · Vendor: certcc

Severity by source

Vendor (certcc) PRIMARY

7.5 HIGH

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

vuln.today AI

7.5 HIGH

Public form submission endpoint requires no auth or complexity; impact is purely availability exhaustion with no confidentiality or integrity effect.

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

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

Primary rating from Vendor (certcc).

CVSS VectorVendor: certcc

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

Analysis Generated

Aug 18, 2026 - 18:24 vuln.today

CVSS changed

Aug 18, 2026 - 18:22 NVD

7.5 (HIGH)

Patch available

Aug 18, 2026 - 16:17 EUVD

CVE Published

Aug 18, 2026 - 15:21 cve.org

UNKNOWN (no severity yet)

CVE Published

Aug 18, 2026 - 15:21 cve.org

HIGH 7.5

DescriptionCVE.org

The Entries component in Brainstorm Force SureForms version, less than 2.1.3, does not enforce adequate limits on user-controlled form fields or submitted content during processing and rendering, which allows a remote attacker to exhaust server resources, prevent administrators from accessing the Entries interface, and trigger HTTP 500 errors via crafted form submissions.

AnalysisAI

Resource exhaustion in Brainstorm Force SureForms before version 2.1.3 enables unauthenticated remote attackers to submit crafted form entries that exhaust server resources, block administrator access to the Entries interface, and trigger HTTP 500 errors sitewide. The root cause is CWE-400: the Entries component imposes no adequate limits on user-controlled field content during processing and rendering, making the attack low-complexity and fully automatable. A publicly available proof-of-concept exploit exists on GitHub, materially lowering the barrier to exploitation, though no CISA KEV listing confirms mass active exploitation at time of analysis.

Technical ContextAI

SureForms is a WordPress form builder plugin developed by Brainstorm Force, identified by CPE cpe:2.3:a:sureforms:sureforms:*:*:*:*:*:*:*:*. The vulnerability resides in the Entries component, which is responsible for accepting, processing, persisting, and rendering user-submitted form data. The root cause class is CWE-400 (Uncontrolled Resource Consumption): the plugin fails to enforce size caps, rate limits, or computational bounds on user-supplied field values before these values are processed server-side and stored or rendered in the admin Entries view. Oversized or high-volume crafted submissions cause unbounded memory and CPU consumption within the WordPress/PHP execution environment, progressively starving legitimate requests of resources until the web server returns HTTP 500 errors. The Entries admin interface is then unavailable because any attempt to load or render the accumulated malicious submissions triggers the same resource exhaustion cycle.

RemediationAI

The definitive fix is upgrading SureForms to version 2.1.3 or later, which the vendor has released to address the Entries component resource consumption issue; the upgrade is available through the standard WordPress plugin repository and the vendor's site at sureforms.com. If an immediate upgrade is operationally blocked, administrators should deploy WAF rules that enforce request body size limits and per-IP submission rate caps on the WordPress form submission endpoint to reduce the effectiveness of crafted payload floods - note that aggressive rate limiting may affect legitimate high-volume form users. Temporarily disabling the affected SureForms forms or restricting form submission endpoints to authenticated sessions (if the use case permits) eliminates the unauthenticated attack surface at the cost of form availability. Because the admin Entries interface is also impacted during an active attack, ensuring the WordPress admin area is IP-restricted to known administrative networks provides partial protection for that interface but does not prevent the underlying server resource exhaustion from occurring.