CVE-2026-81155Network attack vector

Author-level stored XSS via unescaped gallery setting

Published Oct 11, 2026 · Updated Oct 11, 2026

Stored XSS in Robo Gallery before 5.2.6 allows remote authenticated users to execute scripts in visitors' browsers via gallery settings. Frontend gallery output includes an attacker-controlled setting without sanitization or escaping; the supplied title identifies the search label, but an exact public disclosure was not retrieved. Author-level access or above is required to store the payload, which executes when visitors, including administrators, view the affected gallery.

CVSS severityUnavailable
Unscored
EPSS probability0.29%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Robo Gallery before 5.2.6 allows remote authenticated users to execute scripts in visitors' browsers via gallery settings. Frontend gallery output includes an attacker-controlled setting without sanitization or escaping; the supplied title identifies the search label, but an exact public disclosure was not retrieved. Author-level access or above is required to store the payload, which executes when visitors, including administrators, view the affected gallery.

The record

CVE
CVE-2026-81155
Published
Oct 11, 2026
Updated
Oct 11, 2026
Vendor
RoboSoft
Product
Robo Gallery
Classifications
T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 11, 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 <5.2.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

RoboSoft · Robo Galleryversion=0 <5.2.6

Published CVSS scores

No CVSS assessment is available in this record.

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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1203Exploitation for Client Execution

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

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Your stack

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