CVE-2025-64716Public exploitNetwork attack vector

Open redirect via unvalidated redir URL scheme

Published Nov 13, 2025 · Updated Nov 13, 2025

Open redirect in subrequest authentication in Techaro Anubis before 1.23.0 allows remote attackers to supply arbitrary URL schemes. ServeHTTPNext parses the redir parameter and, before the fix, accepts schemes such as javascript, data, file, and custom protocols for a Location response. The route is exposed only when subrequest authentication is enabled; an accepting client invokes its registered protocol handler, while most modern browsers block javascript redirects.

CVSS severity5.1
Medium
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Open redirect in subrequest authentication in Techaro Anubis before 1.23.0 allows remote attackers to supply arbitrary URL schemes. ServeHTTPNext parses the redir parameter and, before the fix, accepts schemes such as javascript, data, file, and custom protocols for a Location response. The route is exposed only when subrequest authentication is enabled; an accepting client invokes its registered protocol handler, while most modern browsers block javascript redirects.

The record

CVE
CVE-2025-64716
Published
Nov 13, 2025
Updated
Nov 13, 2025
Vendor
Techaro
Product
Anubis
Classifications
CWE-79, CWE-601, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 13, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 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=< 1.23.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Techaro · Anubisversion=< 1.23.0

Published CVSS scores

5.1GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:H/SA: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-601URL Redirection to Untrusted Site ('Open Redirect')
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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