CVE-2022-46165Public exploitNetwork attack vector

Stored script execution via HTML-enabled tooltips

Published Jun 6, 2023 · Updated Feb 13, 2025

Stored cross-site scripting in Syncthing before 1.23.5 allows remote authenticated users to execute script in a peer's web GUI. The tooltip directive enables HTML rendering for unsanitized filenames and device names placed in Latest Change and Shared With tooltips. Exploitation requires a connected device to supply malicious content and an operator to view or hover over the affected GUI, after which script can alter folder sharing settings or add devices.

CVSS severity4.6
Medium
EPSS probability0.78%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in Syncthing before 1.23.5 allows remote authenticated users to execute script in a peer's web GUI. The tooltip directive enables HTML rendering for unsanitized filenames and device names placed in Latest Change and Shared With tooltips. Exploitation requires a connected device to supply malicious content and an operator to view or hover over the affected GUI, after which script can alter folder sharing settings or add devices.

The record

CVE
CVE-2022-46165
Published
Jun 6, 2023
Updated
Feb 13, 2025
Vendor
Syncthing Foundation
Product
Syncthing
Classifications
CWE-79, T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 6, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2025Record 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=< 1.23.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Syncthing Foundation · Syncthingversion=< 1.23.5

Published CVSS scores

4.6GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

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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