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CVE-2023-1069· NVD / CVE Program· CNA WPScan

Complianz - GDPR/CCPA Cookie Consent < 6.4.2 - Contributor+ Stored XSS

The Complianz WordPress plugin before 6.4.2, Complianz Premium WordPress plugin before 6.4.2 do not validate and escape some of its shortcode attributes before outputting them back in a page/post where the shortcode is embed, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks

MediumCVSS 5.4 · v3.1—No exploit Fix available
Published
Mar 27, 2023
Updated
Jun 17, 2026
EPSS
0.6% · 44th percentile
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Report tools

JSON

Action score

21

Monitor

Low priority for now.

CVSS
21 / 40 · 5.4 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.6%

CISA SSVC decision

Exploitation
proof of concept
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Affected systems

VendorProduct
really-simple-pluginscomplianz

Affected versions

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

  • really-simple-plugins complianzbefore 6.4.2

Versions reported by the vendor

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

  • Unknown Complianz

    • before 6.4.2affected

  • Unknown Complianz Premium

    • before 6.4.2affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Packagistreally-simple-plugins/complianz-gdprbefore 6.4.26.4.2

Same product

really-simple-plugins: all records

Other highest-scoring records for the same primary product.

  • CVE-2023-34030WordPress Complianz and Complianz Premium plugins - Cross Site Request Forgery (CSRF)
    35Monitor
  • CVE-2023-33333WordPress Complianz and Complianz Premium plugins - Cross-Site Request Forgery (CSRF) leading to Cross-Site Scripting (XSS)
    35Monitor
  • CVE-2022-3494Complianz (Free < 6.3.4, Premium < 6.3.6) - Translator SQLi
    35Monitor
  • CVE-2022-0193Complianz - GDPR/CCPA Cookie Consent < 6.0.0 - Reflected Cross-Site Scripting
    24Monitor
  • CVE-2023-6498Complianz | GDPR/CCPA Cookie Consent <= 6.5.5 - Authenticated(Administrator+) Stored Cross-site Scripting via settings
    19Monitor
  • CVE-2024-1592Complianz – GDPR/CCPA Cookie Consent <= 6.5.6 - Cross-Site Request Forgery to Data Request Deletion
    17Monitor

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
Packagist:really-simple-plugins/complianz-gdpr6.4.2Package registry (OSV)

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.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
low · data can be read
Integrity
low · data or configuration can be modified
Availability
none

Impact can extend beyond the vulnerable component (scope changes).

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
Required
Scope
Changed
Confidentiality impact
Low
Integrity impact
Low
Availability impact
None

Weakness class (CWE)

CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSS vector

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

nvd-primary

Root cause

User content is inserted into the page as HTML. The browser interprets the content as code rather than data.

The bug in code

The whole CWE-79 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
commentEl.innerHTML = comment.body;

Fixed

ts
commentEl.textContent = comment.body;

Attack context

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

ATT&CK techniques

—

Noroxi analysis

No Noroxi analysis for this record yet

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Change log

  1. Fix✗ → ✓

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