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PatchSiren cyber security CVE debrief

CVE-2025-15490 Passster CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-09-02T15:17:36.713Z and has not been modified since then. The Passster WordPress plugin before version 4.2.26 has a flaw in its global protection checks, allowing unauthenticated users to bypass protection via crafted URLs. This vulnerability has a CVSS score of 5.3 and a severity of MEDIUM. Affected product deployments should prioritize patching to version 4.2.26 or later. The vulnerability's characteristics may not be fully represented due to limited publicly available information. Defenders should verify affected deployments and review official advisories for specific guidance. Evidence is limited to public sources and may not reflect the full scope or impact of the vulnerability.

Vendor
Passster
Product
Passster WordPress plugin
CVSS
MEDIUM 5.3
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

WordPress site administrators using the Passster plugin, cybersecurity teams responsible for vulnerability management, developers maintaining WordPress plugins, and operators of affected platforms should be aware of this vulnerability. They should review official advisories, assess their exposure, and plan for remediation or mitigation as necessary. Vulnerability management processes should be reviewed and updated to address this type of flaw in plugins and ensure timely patching or mitigation of similar vulnerabilities in the future.

Technical summary

The Passster WordPress plugin before 4.2.26 has a flaw in its global protection checks, allowing unauthenticated users to bypass the protection offered via crafted URLs. This vulnerability has a CVSS score of 5.3 and a severity of MEDIUM. Affected product deployments should prioritize patching to version 4.2.26 or later. Technical details are limited to publicly available information and may not fully represent the vulnerability's characteristics.

Defensive priority

Medium-severity vulnerability in Passster WordPress plugin allows unauthenticated users to bypass protection via crafted URLs; prioritize patching.

Recommended defensive actions

  • Patch Passster WordPress plugin to version 4.2.26 or later
  • Implement Web Application Firewall (WAF) rules to detect and prevent crafted URLs
  • Monitor plugin version and update if necessary
  • Restrict access to sensitive areas of the WordPress site
  • Regularly review and update vulnerability management processes

Evidence notes

The Passster WordPress plugin before 4.2.26 has a flaw in its global protection checks. Official CVE and NVD records confirm the vulnerability's existence and provide CVSS scoring. WPScan vulnerability reference explicitly names the affected product. Evidence is limited to public sources and may not reflect the full scope or impact of the vulnerability. Defenders should verify affected deployments and review official advisories for specific guidance.

Sources and references

Verified primary and authoritative sources

  • CVE-2025-15490 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2025-15490

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

  • CVE-2025-15490 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2025-15490

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

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.