CVE-2020-36955Public exploitNetwork attack vectorHinoki check available

Stored script execution via unsanitized page titles

Published Jan 26, 2026 · Updated Jan 26, 2026

Stored cross-site scripting in Grav Admin Plugin 1.9.18 and earlier allows remote authenticated users to execute scripts via page titles. The /admin/pages creation route stores the data[title] form value without neutralizing script markup, then renders it in page listings and site views. An account with page-creation access must save a crafted title; execution occurs when an administrator or site visitor opens a rendering view, exposing that viewer's browser context.

CVSS severity5.1
Medium
EPSS probability0.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Stored cross-site scripting in Grav Admin Plugin 1.9.18 and earlier allows remote authenticated users to execute scripts via page titles. The /admin/pages creation route stores the data[title] form value without neutralizing script markup, then renders it in page listings and site views. An account with page-creation access must save a crafted title; execution occurs when an administrator or site visitor opens a rendering view, exposing that viewer's browser context.

The record

CVE
CVE-2020-36955
Published
Jan 26, 2026
Updated
Jan 26, 2026
Vendor
Grav
Product
Grav Admin Plugin
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=1.9.18

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Grav · Grav Admin Pluginversion=0 <=1.9.18

Published CVSS scores

6.4VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
5.1VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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