CVE-2026-23841Public exploitNetwork attack vector

Reflected XSS via HTML-rendered location alert

Published Jan 19, 2026 · Updated Jan 19, 2026

Reflected XSS in Movary before 0.70.0 allows remote attackers to execute JavaScript in another user's browser through categoryCreated. The location settings script passes the parameter to setLocationsAlert, whose vulnerable implementation interprets the message as HTML instead of plain text. Exploitation requires a user to open a crafted location-settings URL; the injected script then runs in that user's Movary origin.

CVSS severity9.3
Critical
EPSS probability0.26%
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 Movary before 0.70.0 allows remote attackers to execute JavaScript in another user's browser through categoryCreated. The location settings script passes the parameter to setLocationsAlert, whose vulnerable implementation interprets the message as HTML instead of plain text. Exploitation requires a user to open a crafted location-settings URL; the injected script then runs in that user's Movary origin.

The record

CVE
CVE-2026-23841
Published
Jan 19, 2026
Updated
Jan 19, 2026
Vendor
Lee Peuker
Product
Movary
Classifications
CWE-79, CWE-20, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 19, 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=< 0.70.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Lee Peuker · Movaryversion=< 0.70.0

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
9.3GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-20Improper Input Validation
T1203Exploitation for Client Execution

Public exploit references

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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