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CVE-2021-4337· NVD / CVE Program· CNA Wordfence

Multiple XforWooCommerce Add-On Plugins (Various Versions) - Missing Authorization

Noroxi assessment

Priority: Monitor (action score 35/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 1.2% (FIRST EPSS); higher than 69.3% of all records.
  • Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: XforWooCommerce Add Product Tabs for WooCommerce 1.5.0; XforWooCommerce Autopilot SEO for WooCommerce 1.6.0; XforWooCommerce Bulk Add to Cart for WooCommerce 1.3.0.

Low priority for now. Upgrade to XforWooCommerce Add Product Tabs for WooCommerce 1.5.0; XforWooCommerce Autopilot SEO for WooCommerce 1.6.0; XforWooCommerce Bulk Add to Cart for WooCommerce 1.3.0 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Sixteen XforWooCommerce Add-On Plugins for WordPress are vulnerable to authorization bypass due to a missing capability check on the wp_ajax_svx_ajax_factory function in various versions listed below. This makes it possible for authenticated attackers, with subscriber-level permissions and above, to read, edit, or delete WordPress settings, plugin settings, and to arbitrarily list all users on a WordPress website. The plugins impacted are: Product Filter for WooCommerce < 8.2.0, Improved Product Options for WooCommerce < 5.3.0, Improved Sale Badges for WooCommerce < 4.4.0, Share, Print and PDF Products for WooCommerce < 2.8.0, Product Loops for WooCommerce < 1.7.0, XforWooCommerce < 1.7.0, Package Quantity Discount < 1.2.0, Price Commander for WooCommerce < 1.3.0, Comment and Review Spam Control for WooCommerce < 1.5.0, Add Product Tabs for WooCommerce < 1.5.0, Autopilot SEO for WooCommerce < 1.6.0, Floating Cart < 1.3.0, Live Search for WooCommerce < 2.1.0, Bulk Add to Cart for WooCommerce < 1.3.0, Live Product Editor for WooCommerce < 4.7.0, and Warranties and Returns for WooCommerce < 5.3.0.

HighCVSS 8.8 · v3.1—No exploit Fix available
Published
Jun 7, 2023
Updated
Jun 17, 2026
EPSS
1.3% · 69th percentile

Report tools

JSON

Action score

35

Monitor

Low priority for now.

CVSS
35 / 40 · 8.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.3%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
8.8
CNA · Wordfence
8.8
agree

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2021-4337

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
xforwoocommerceadd product tabs
xforwoocommerceautopilot seo
xforwoocommercebulk add to cart
xforwoocommercecomment and review spam control
xforwoocommercefloating cart
xforwoocommerceimproved product options
xforwoocommerceimproved sale badges
xforwoocommercelive product editor
xforwoocommercelive search
xforwoocommercepackage quantity
xforwoocommerceprice commander
xforwoocommerceproduct filter

and 4 more

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • xforwoocommerce add product tabsbefore 1.5.0
  • xforwoocommerce autopilot seobefore 1.6.0
  • xforwoocommerce bulk add to cartbefore 1.3.0
  • xforwoocommerce comment and review spam controlbefore 1.5.0
  • xforwoocommerce floating cartbefore 1.3.0
  • xforwoocommerce improved product optionsbefore 5.3.0
  • xforwoocommerce improved sale badgesbefore 4.4.0
  • xforwoocommerce live product editorbefore 4.7.0
  • xforwoocommerce live searchbefore 2.1.0
  • xforwoocommerce package quantitybefore 1.2.0
  • xforwoocommerce price commanderbefore 1.3.0
  • xforwoocommerce product filterbefore 8.2.0
  • xforwoocommerce product loopsbefore 1.7.0
  • xforwoocommerce share, print and pdf productsbefore 2.8.0
  • xforwoocommerce warranties and returnsbefore 5.3.0
  • xforwoocommerce xforwoocommercebefore 1.7.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Wordfence). Independent of NVD's CPE analysis and usually ahead of it.

  • XforWooCommerce Add Product Tabs for WooCommerce

    • before 1.5.0affected · semver

  • XforWooCommerce Autopilot SEO for WooCommerce

    • before 1.6.0affected · semver

  • XforWooCommerce Bulk Add to Cart for WooCommerce

    • before 1.3.0affected · semver

  • XforWooCommerce Comment and Review Spam Control for WooCommerce

    • before 1.5.0affected · semver

  • XforWooCommerce Floating Cart for WooCommerce

    • before 1.3.0affected · semver

  • XforWooCommerce Improved Product Options for WooCommerce

    • before 5.3.0affected · semver

  • XforWooCommerce Improved Sale Badges for WooCommerce

    • before 4.4.0affected · semver

  • XforWooCommerce Live Product Editor for WooCommerce

    • before 4.7.0affected · semver

  • XforWooCommerce Live Search for WooCommerce

    • before 2.1.0affected · semver

  • XforWooCommerce Package Quantity Discount

    • before 1.2.0affected · semver

  • XforWooCommerce Price Commander for WooCommerce

    • before 1.3.0affected · semver

  • XforWooCommerce Product Filter for WooCommerce

    • before 8.2.0affected · semver

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
XforWooCommerce Add Product Tabs for WooCommerce1.5.0Vendor (CNA)
XforWooCommerce Autopilot SEO for WooCommerce1.6.0Vendor (CNA)
XforWooCommerce Bulk Add to Cart for WooCommerce1.3.0Vendor (CNA)
XforWooCommerce Comment and Review Spam Control for WooCommerce1.5.0Vendor (CNA)
XforWooCommerce Floating Cart for WooCommerce1.3.0Vendor (CNA)
XforWooCommerce Improved Product Options for WooCommerce5.3.0Vendor (CNA)
XforWooCommerce Improved Sale Badges for WooCommerce4.4.0Vendor (CNA)
XforWooCommerce Live Product Editor for WooCommerce4.7.0Vendor (CNA)
XforWooCommerce Live Search for WooCommerce2.1.0Vendor (CNA)
XforWooCommerce Package Quantity Discount1.2.0Vendor (CNA)
XforWooCommerce Price Commander for WooCommerce1.3.0Vendor (CNA)
XforWooCommerce Product Filter for WooCommerce8.2.0Vendor (CNA)
XforWooCommerce Product Loops for WooCommerce1.7.0Vendor (CNA)
XforWooCommerce Share, Print and PDF Products for WooCommerce2.8.0Vendor (CNA)
XforWooCommerce Warranties and Returns for WooCommerce5.3.0Vendor (CNA)
XforWooCommerce XforWooCommerce1.7.0Vendor (CNA)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-862 · Missing Authorization

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (1 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records