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CVE-2026-48885 Groundhogg CVE debrief

CVE-2026-48885 is a HIGH severity Unauthenticated Cross Site Scripting (XSS) vulnerability in HollerBox versions up to 2.3.10.1. The vulnerability has a CVSS score of 7.1 and was published on [cvePublishedAt](https://www.cve.org/CVERecord?id=CVE-2026-48885).

Vendor
Groundhogg
Product
HollerBox
CVSS
HIGH 7.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-15
Original CVE updated
2026-06-15
Advisory published
2026-06-15
Advisory updated
2026-06-15

Who should care

Users of HollerBox versions up to 2.3.10.1 should apply patches or mitigations as soon as possible to prevent exploitation.

Technical summary

The vulnerability is caused by improper input validation in HollerBox, allowing unauthenticated attackers to inject malicious scripts. The CVSS vector for this vulnerability is CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L.

Defensive priority

HIGH

Recommended defensive actions

  • Apply patches or updates to HollerBox versions up to 2.3.10.1 as soon as possible.
  • Review and restrict user input to prevent malicious script injection.

Evidence notes

Evidence for this vulnerability comes from Patchstack and the National Vulnerability Database (NVD).

Official resources

CVE-2026-48885 was published on 2026-06-15T21:17:17.730Z and modified on 2026-06-15T21:24:32.790Z.