ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2026-37503

Cross-Site Scripting (XSS) in V2Board thru 1.7.4.

Published May 1, 2026 · catalog updated Jun 17, 2026 · Cross-Site Scripting (XSS) in

Check if you run it

No confirmed exploitation is on record for CVE-2026-37503. EPSS is 0.29%. Act only if a listed version of Cross-Site Scripting (XSS) in is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Cross-Site Scripting (XSS) in).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium4.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.29%
Remediation
Not established
Affected products
cpe v2board/v2board

Cross-Site Scripting (XSS) in V2Board thru 1.7.4. The custom_html field in theme configuration is rendered using Blade unescaped output in public/theme/v2board/dashboard.blade.php. An admin can inject arbitrary JavaScript via the saveThemeConfig API. All site visitors execute the payload, enabling cookie theft, session hijacking, or phishing.

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.

  • cpe v2board/v2boardversion unspecified

How to fix CVE-2026-37503

What to do

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

Should you patch?

No confirmed exploitation is on record for CVE-2026-37503. EPSS is 0.29%. Act only if a listed version of Cross-Site Scripting (XSS) in is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-79: Cross-site Scripting (XSS). EPSS 0.29%. There is no CISA KEV listing. 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. May 1, 2026 · NIST NVD

    Detected

    Cross-Site Scripting (XSS) in V2Board thru 1.7.4. The custom_html field in theme configuration is rendered using Blade unescaped output in public/theme/v2board/dashboard.blade.php. An admin can inject arbitrary JavaScript via the saveThemeConfig API. All site visitors execute the payload, enabling cookie theft, session hijacking, or phishing.

  2. Jun 17, 2026 · NIST NVD

    Updated

    Cross-Site Scripting (XSS) in V2Board thru 1.7.4. The custom_html field in theme configuration is rendered using Blade unescaped output in public/theme/v2board/dashboard.blade.php. An admin can inject arbitrary JavaScript via the saveThemeConfig API. All site visitors execute the payload, enabling cookie theft, session hijacking, or phishing.

Sources

  • CVE.orgVulnerability recordCVE-2026-37503

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-37503

    30-day exploitation probability 0.3%

    first.org
  • NIST NVDVulnerability recordCVE-2026-37503

    Cross-Site Scripting (XSS) in V2Board thru 1.7.4. The custom_html field in theme configuration is rendered using Blade unescaped output in public/theme/v2board/dashboard.blade.php. An admin can inject arbitrary JavaScript via the saveThemeConfig API. All site visitors execute the

    nvd.nist.gov

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.