PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-82883 Marcus CVE debrief

A Cross-site Scripting (XSS) vulnerability exists in the Login With Ajax plugin for WordPress, affecting versions from n/a through 4.5.1. This issue allows for Reflected XSS attacks. The vulnerability can be exploited through user-supplied input, potentially allowing attackers to inject malicious scripts. Defenders should assess exposure and prioritize verification and potential updates to prevent exploitation. The CVE record and NVD entry provide details on the vulnerability, including its CVSS score of 7.1 and severity of HIGH.

Vendor
Marcus
Product
Login With Ajax
CVSS
HIGH 7.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-02
Original CVE updated
2026-09-03
Advisory published
2026-09-02
Advisory updated
2026-09-03

Who should care

Defenders responsible for WordPress environments using the Login With Ajax plugin should assess exposure and prioritize verification and potential updates.

Why it matters

CVE-2026-82883 is a Cross-site Scripting vulnerability in the Login With Ajax plugin for WordPress. Defenders should prioritize verifying exposure and assessing the need for updates or mitigations to prevent potential XSS attacks.

  • Defenders need to verify exposure of the Login With Ajax plugin in their WordPress environments.
  • Successful exploitation could lead to XSS attacks, potentially allowing attackers to inject malicious scripts.

Technical summary

The Login With Ajax plugin for WordPress is vulnerable to Reflected Cross-site Scripting (XSS) attacks. The vulnerability affects versions from n/a through 4.5.1. This issue allows for Reflected XSS attacks, potentially allowing attackers to inject malicious scripts. The vulnerability can be exploited through user-supplied input. Defenders should prioritize verifying exposure of the Login With Ajax plugin in their WordPress environments and assess the need for updates or mitigations.

Defensive priority

Defenders should prioritize verifying exposure of the Login With Ajax plugin in their WordPress environments and assess the need for updates or mitigations.

Recommended defensive actions

  • Verify the version of the Login With Ajax plugin in use and update to a patched version if available.
  • Implement input validation and output encoding to prevent XSS attacks.
  • Monitor for suspicious activity related to the Login With Ajax plugin.

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, including its CVSS score of 7.1 and severity of HIGH. The Login With Ajax plugin for WordPress is vulnerable to Reflected Cross-site Scripting (XSS) attacks. The vulnerability affects versions from n/a through 4.5.1. Defenders should verify exposure of the Login With Ajax plugin in their WordPress environments and assess the need for updates or mitigations.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-82883 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-82883

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-82883 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-82883

    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.