What is CVE-2023-41657?

CVE-2023-41657 is a medium-severity vulnerability in Groundhogg Hollerbox, classified under Cross-site Scripting. CVSS score: 5.9/10. Published 2023-09-29.

How severe is CVE-2023-41657?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Is CVE-2023-41657 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Groundhogg Hollerbox

CVE-2023-41657

Auth. (admin+) Stored Cross-Site Scripting (XSS) vulnerability in Groundhogg Inc. HollerBox plugin <= 2.3.2 versions.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2023-09-29 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.004 (27.1th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 27.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.000

Affected products

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

20142995/nuclei-templates

References

patchstack.com/database/vulnerability/holler-box/wordpress-hollerbox-plugin-2-3… (Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2023-41657?: CVE-2023-41657 is a medium-severity vulnerability in Groundhogg Hollerbox, classified under Cross-site Scripting. CVSS score: 5.9/10. Published 2023-09-29.
How severe is CVE-2023-41657?: Medium severity. CVSS v3 base score is 5.9 out of 10.
Is CVE-2023-41657 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.