CVE-2026-1838Network attack vector

Reflected XSS via unescaped shortcode_id output

Published Apr 18, 2026 · Updated Apr 18, 2026

Reflected XSS in the Hostel plugin for WordPress 1.1.6 and earlier allows remote attackers to execute scripts via shortcode_id. The room-list AJAX flow carries the shortcode_id request parameter into a generated rooms-table response without sufficient sanitization and output escaping. Execution requires a victim to follow a crafted link, after which the script runs in that victim's browser context and can read or alter page data.

CVSS severity6.1
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in the Hostel plugin for WordPress 1.1.6 and earlier allows remote attackers to execute scripts via shortcode_id. The room-list AJAX flow carries the shortcode_id request parameter into a generated rooms-table response without sufficient sanitization and output escaping. Execution requires a victim to follow a crafted link, after which the script runs in that victim's browser context and can read or alter page data.

The record

CVE
CVE-2026-1838
Published
Apr 18, 2026
Updated
Apr 18, 2026
Vendor
Kiboko Labs Ltd.
Product
Hostel
Classifications
CWE-79, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 18, 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 <=1.1.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Kiboko Labs Ltd. · Hostelversion=0 <=1.1.6

Published CVSS scores

6.1WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A: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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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