PatchSiren cyber security CVE debrief
CVE-2026-40770 RelyWP CVE debrief
CVE-2026-40770 is a HIGH severity Unauthenticated Cross Site Scripting (XSS) vulnerability in Coupon Affiliates plugin versions <= 7.5.3. The vulnerability has a CVSS score of 7.1 and was published on [cvePublishedAt](https://www.cve.org/CVERecord?id=CVE-2026-40770).
- Vendor
- RelyWP
- Product
- Coupon Affiliates
- CVSS
- HIGH 7.1
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-06-15
- Original CVE updated
- 2026-06-15
- Advisory published
- 2026-06-15
- Advisory updated
- 2026-06-15
Who should care
Users of Coupon Affiliates plugin versions <= 7.5.3 should apply patches or mitigations to prevent exploitation.
Technical summary
The vulnerability is caused by a lack of proper input validation and sanitization in the Coupon Affiliates plugin, allowing an unauthenticated attacker to inject malicious JavaScript code.
Defensive priority
HIGH
Recommended defensive actions
- Apply patches or updates to Coupon Affiliates plugin versions <= 7.5.3.
- Implement additional security measures such as input validation and sanitization.
Evidence notes
Evidence of this vulnerability was provided by Patchstack.
Sources and references
Verified primary and authoritative sources
-
CVE-2026-40770 CVE Program record
Publisher, destination, and source semantics verified
URL: https://www.cve.org/CVERecord?id=CVE-2026-40770
CVE Program - Official CVE Program record with source-provided CVE metadata.
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CVE-2026-40770 NVD vulnerability detail
Publisher, destination, and source semantics verified
URL: https://nvd.nist.gov/vuln/detail/CVE-2026-40770
NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.
Methodology and review provenance
AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.