CVE-2026-33510Public exploitNetwork attack vector

Browser script execution via unvalidated callback URL

Published Apr 6, 2026 · Updated Apr 6, 2026

DOM-based XSS in Homarr before 1.57.0 allows remote attackers to execute JavaScript through a crafted login URL. The /auth/login page passes the untrusted callbackUrl query value to redirect or router.push without rejecting javascript: URLs. Execution requires a victim to open the crafted link while authenticated or to complete a successful login, after which script runs in the Homarr origin.

CVSS severity8.8
High
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

DOM-based XSS in Homarr before 1.57.0 allows remote attackers to execute JavaScript through a crafted login URL. The /auth/login page passes the untrusted callbackUrl query value to redirect or router.push without rejecting javascript: URLs. Execution requires a victim to open the crafted link while authenticated or to complete a successful login, after which script runs in the Homarr origin.

The record

CVE
CVE-2026-33510
Published
Apr 6, 2026
Updated
Apr 6, 2026
Vendor
Homarr
Product
Homarr
Classifications
CWE-87, CWE-601, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 6, 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=< 1.57.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Homarr · Homarrversion=< 1.57.0

Published CVSS scores

8.8GitHub Security AdvisoryCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:L

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 exploitPublished

Weakness, pattern, technique

CWE-87Improper Neutralization of Alternate XSS Syntax
CWE-601URL Redirection to Untrusted Site ('Open Redirect')
T1204.001Malicious Link

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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