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CVE Record

CVE-2023-6934: Limit Login Attempts Reloaded <= 2.25.26 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode

The Limit Login Attempts Reloaded plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's shortcode(s) in all versions up to, and including, 2.25.26 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

MediumCVSS 6.4Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2023-6934 lets a logged-in WordPress user with Contributor or higher access store malicious script through Limit Login Attempts Reloaded shortcodes. The script runs when someone views the affected page. This is not unauthenticated remote takeover, but it can expose sessions or alter page behavior on sites with untrusted authors.

Executive priority

Treat this as a moderate-priority WordPress hygiene issue. Prioritize sites with many content contributors, external authors, or administrator users who frequently review contributor content.

Technical view

The plugin fails to sufficiently sanitize user-supplied shortcode attributes and escape output in versions up to and including 2.25.26. The issue is stored cross-site scripting, CWE-79, with CVSS 3.1 score 6.4. Exploitation requires a low-privileged authenticated WordPress role such as Contributor.

Likely exposure

Exposure is likely limited to WordPress sites running Limit Login Attempts Reloaded at version 2.25.26 or older and allowing Contributor-level or higher users to create content containing the plugin shortcode.

Exploitation context

The provided sources do not show CISA KEV listing or other evidence of active exploitation. The attack requires authenticated WordPress access, but stored XSS can affect later visitors, including administrators, when they load injected content.

Researcher notes

Focus validation on shortcode handling, attribute sanitization, and escaping behavior. The public record supports authenticated stored XSS, not unauthenticated exploitation or known active abuse. Avoid assuming impact beyond browser-executed script in affected WordPress pages.

Mitigation direction

  • Update the plugin beyond 2.25.26 when vendor guidance confirms a fixed release.
  • Review and restrict Contributor-level access to trusted users only.
  • Audit pages and posts using the plugin shortcodes.
  • Remove suspicious shortcode attributes or unexpected embedded scripts.
  • Monitor vendor, WordPress plugin, and Wordfence guidance for remediation details.

Validation and detection

  • Inventory WordPress sites running Limit Login Attempts Reloaded.
  • Confirm whether installed plugin versions are 2.25.26 or older.
  • Identify users with Contributor, Author, Editor, or Administrator roles.
  • Review content containing Limit Login Attempts Reloaded shortcodes.
  • Verify updated plugin code includes sanitization and output escaping changes.
Prepared
Confidence
high
Sources
5

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-2023-6934 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
Medium
CVSS
6.4 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:L/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
6.4CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N3.12.7Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

6.4Medium
CVSS 3.1 vector shape for CVE-2023-6934Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:L/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
wpchefgadgetLimit Login Attempts Reloaded – Login Security, 2FA, Brute Force Protection & Firewall0unaffected
Weakness

CWE details

CWE-79

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