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CVE Record

CVE-2026-1261: MetForm Pro <= 3.9.6 - Unauthenticated Stored Cross-Site Scripting

The MetForm Pro plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Quiz feature in all versions up to, and including, 3.9.6 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

HighCVSS 7.2Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2026-1261 affects the MetForm Pro WordPress plugin through version 3.9.6. A public attacker can store malicious script through the Quiz feature. That script can run when someone views the affected page, potentially exposing session data or altering page behavior.

Executive priority

Treat as a near-term web application risk for WordPress properties using MetForm Pro. Prioritize internet-facing sites and sites where administrators or customers view quiz submissions or quiz pages.

Technical view

MetForm Pro <= 3.9.6 has stored cross-site scripting in the Quiz feature due to insufficient input sanitization and output escaping. The CVSS 3.1 score is 7.2, vector AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N, mapped to CWE-79.

Likely exposure

WordPress sites running MetForm Pro version 3.9.6 or earlier are potentially exposed, especially if the Quiz feature is enabled or reachable by unauthenticated users.

Exploitation context

The CVE states exploitation is unauthenticated, network-accessible, and low complexity. No CISA KEV listing or provided source confirms active exploitation in the wild.

Researcher notes

The source bundle references WordPress Trac paths for the Quiz loader and Wordfence’s vulnerability record. The bundle does not name a fixed version or confirm exploitation. Avoid assuming remediation beyond vendor guidance.

Mitigation direction

  • Check Wpmet and Wordfence guidance for a fixed MetForm Pro release.
  • Update MetForm Pro when a vendor-supported fixed version is available.
  • Disable or restrict the Quiz feature until remediation is confirmed.
  • Review and remove suspicious quiz content or embedded scripts.

Validation and detection

  • Inventory WordPress sites using MetForm Pro.
  • Confirm whether installed versions are 3.9.6 or earlier.
  • Identify public forms using the Quiz feature.
  • Review affected pages for unexpected stored script content.
  • Monitor vendor advisories for fixed-version confirmation.
Prepared
Confidence
medium
Sources
7

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · medium confidence lookup

CWE-79: User-session and phishing behavior lookup

Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

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cve · low confidence lookup

CVE-2026-1261 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
High
CVSS
7.2 (3.1)
Known Exploited
No
Published

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

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
4Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
7.2CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N3.92.7Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

7.2High
CVSS 3.1 vector shape for CVE-2026-1261Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
WpmetMetForm Pro0unaffected
Weakness

CWE details

CWE-79

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-79 · source CWE mapping

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

Open CWE intelligenceSame-CWE CVEs