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Vulnerabilities

Vulnerability · CVE-2020-36955

Grav CMS 1.6.30 with Admin Plugin 1.9.18 contains a persistent cross-site scripting vulnerability that allows authenticated attackers to inject malicious scripts through the page t

Published Jan 26, 2026 · catalog updated Mar 5, 2026 · Grav CMS Admin Plugin

Last checked Nov 6, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2020-36955. EPSS is 0.63%. Act only if a listed version of Grav CMS Admin Plugin is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.63%
Remediation
Vendor / distro source
Affected products
vendor getgrav Grav CMS Admin Plugin 0 ≤1.9.18

Grav CMS 1.6.30 with Admin Plugin 1.9.18 contains a persistent cross-site scripting vulnerability that allows authenticated attackers to inject malicious scripts through the page title field. Attackers can create a new page with a malicious script in the title, which will be executed when the page is viewed in the admin panel or on the site.

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 getgrav Grav CMS Admin Plugin 0 ≤1.9.180 ≤1.9.18

How to fix CVE-2020-36955

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-2020-36955. EPSS is 0.63%. Act only if a listed version of Grav CMS Admin Plugin is installed.

Which versions are affected?

Compare what you have installed with getgrav Grav CMS Admin Plugin 0 ≤1.9.18 0 ≤1.9.18. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.63%. 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.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jan 26, 2026 · EUVD

    Detected

    Grav CMS 1.6.30 with Admin Plugin 1.9.18 contains a persistent cross-site scripting vulnerability that allows authenticated attackers to inject malicious scripts through the page title field. Attackers can create a new page with a malicious script in the title, which will be executed when the page is viewed in the admin panel or on the site.

  2. Mar 5, 2026 · EUVD

    Updated

    Grav CMS 1.6.30 with Admin Plugin 1.9.18 contains a persistent cross-site scripting vulnerability that allows authenticated attackers to inject malicious scripts through the page title field. Attackers can create a new page with a malicious script in the title, which will be executed when the page is viewed in the admin panel or on the site.

Sources

  • CVE.orgVulnerability recordCVE-2020-36955

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2020-36955

    30-day exploitation probability 0.63%

    first.org
  • EUVDVulnerability recordEUVD-2020-30847

    Grav CMS 1.6.30 with Admin Plugin 1.9.18 contains a persistent cross-site scripting vulnerability that allows authenticated attackers to inject malicious scripts through the page title field. Attackers can create a new page with a malicious script in the title, which will be exec

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 6, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 6, 2026
  • CVE.orgNov 4, 2026
  • EUVDNov 2, 2026