CVE-2023-40681Network attack vector

Stored script execution via unsanitized task data

Published Oct 31, 2023 · Updated Apr 28, 2026

Stored XSS in task handling in Groundhogg Inc. Groundhogg 2.7.11.10 and earlier allows remote authenticated users to execute scripts. The plugin stores task data without sufficient input sanitization and renders it without sufficient output escaping, causing injected script to run when an affected page is opened. Exploitation requires administrator-level access and applies only to multisite installations or sites where unfiltered_html is disabled, with execution occurring in the viewing user's browser.

CVSS severity5.9
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Stored XSS in task handling in Groundhogg Inc. Groundhogg 2.7.11.10 and earlier allows remote authenticated users to execute scripts. The plugin stores task data without sufficient input sanitization and renders it without sufficient output escaping, causing injected script to run when an affected page is opened. Exploitation requires administrator-level access and applies only to multisite installations or sites where unfiltered_html is disabled, with execution occurring in the viewing user's browser.

The record

CVE
CVE-2023-40681
Published
Oct 31, 2023
Updated
Apr 28, 2026
Vendor
Groundhogg Inc.
Product
Groundhogg
Classifications
CWE-79, CAPEC-592, T1189
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Oct 31, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=n/a <=2.7.11.10 changes=[{"at":"2.7.11.11","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Groundhogg Inc. · Groundhoggversion=n/a <=2.7.11.10 changes=[{"at":"2.7.11.11","status":"unaffected"}]

Published CVSS scores

4.4WordfenceCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
5.9PatchstackCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-592Stored XSS
T1189Drive-by Compromise

Public exploit references

No public exploit references are available in this record.

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo