CVE-2023-6646Public exploitNetwork attack vector

Authenticated script execution via unencoded search query

Published Dec 9, 2023 · Updated May 27, 2025

Reflected XSS in linkding 1.23.0 allows remote authenticated users to execute script through a crafted search query. The bookmark search interface inserted the q parameter into a generated URL without percent-encoding it, allowing attacker-controlled markup to reach the rendered page. Exploitation requires an authenticated session and a user to open the crafted URL; the script then runs in that user's browser context.

CVSS severity5.4
Medium
EPSS probability0.64%
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 linkding 1.23.0 allows remote authenticated users to execute script through a crafted search query. The bookmark search interface inserted the q parameter into a generated URL without percent-encoding it, allowing attacker-controlled markup to reach the rendered page. Exploitation requires an authenticated session and a user to open the crafted URL; the script then runs in that user's browser context.

The record

CVE
CVE-2023-6646
Published
Dec 9, 2023
Updated
May 27, 2025
Vendor
sissbruecker
Product
linkding
Classifications
CWE-79, T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 9, 2023CVE publishedPublication date reported by the CVE source.
  2. May 27, 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=1.23.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

sissbruecker · linkdingversion=1.23.0

Published CVSS scores

5.4NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
3.5VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
4.0VulDBAV:N/AC:L/Au:S/C:N/I:P/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.

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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
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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