CVE-2025-67796Network attack vector

Cross-user impersonation via unscoped token lookup

Published May 4, 2026 · Updated May 4, 2026

Improper authorization in IKUS Rdiffweb before 2.10.6 allows remote authenticated users to impersonate other users through the API. UserObject.check_access_token searched every Token record instead of restricting the lookup to the user named by HTTP Basic authentication. Possession of any valid or stolen access token is sufficient to read or modify another user's data and perform privileged actions without user interaction.

CVSS severity8.1
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authorization in IKUS Rdiffweb before 2.10.6 allows remote authenticated users to impersonate other users through the API. UserObject.check_access_token searched every Token record instead of restricting the lookup to the user named by HTTP Basic authentication. Possession of any valid or stolen access token is sufficient to read or modify another user's data and perform privileged actions without user interaction.

The record

CVE
CVE-2025-67796
Published
May 4, 2026
Updated
May 4, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-284, T1078
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 4, 2026CVE publishedPublication date reported by the CVE source.
  2. May 4, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/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.

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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 exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
T1078Valid Accounts

Public exploit references

No public exploit references are available in this record.

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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