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Vulnerabilities

Vulnerability · CVE-2026-25306

8theme XStore Core Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Published Mar 17, 2026 · catalog updated Jun 17, 2026 · XStore Core

Patch now

CVE-2026-25306 is in the CISA known-exploited catalog. Confirm XStore Core against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
High7.1
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
0.18%
Remediation
Remediation guidance
Affected products
vendor 8theme XStore Core

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in 8theme XStore Core et-core-plugin allows Reflected XSS.This issue affects XStore Core: from n/a through <= 5.6.4.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor 8theme XStore Coreversion unspecified

How to fix CVE-2026-25306

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2026-25306 is in the CISA known-exploited catalog. Confirm XStore Core against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

CWE-79: Cross-site Scripting (XSS). EPSS 0.18%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Mar 17, 2026 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

  2. Mar 25, 2026 · NIST NVD

    Detected

    Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in 8theme XStore Core et-core-plugin allows Reflected XSS.This issue affects XStore Core: from n/a through <= 5.6.4.

  3. Jun 17, 2026 · NIST NVD

    Updated

    Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in 8theme XStore Core et-core-plugin allows Reflected XSS.This issue affects XStore Core: from n/a through <= 5.6.4.

Sources

  • CVE.orgVulnerability recordCVE-2026-25306

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-25306

    30-day exploitation probability 0.2%

    first.org
  • NIST NVDVulnerability recordCVE-2026-25306

    Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in 8theme XStore Core et-core-plugin allows Reflected XSS.This issue affects XStore Core: from n/a through <= 5.6.4.

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2026-25306

    Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in 8theme XStore Core et-core-plugin allows Reflected XSS.This issue affects XStore Core: from n/a through <= 5.6.4.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.