CVE-2026-82378Network attack vectorHinoki check available

Account impersonation via request-supplied OAuth identity

Published Sep 28, 2026 · Updated Sep 28, 2026

Incorrect authorization in Apache Roller 6.1.5 allows remote attackers to bind OAuth request tokens to arbitrary accounts via unsigned requests. The OAuth authorization servlet reads the authorizing user from a submitted userId or xoauth_requestor_id parameter rather than the authenticated session. Exploitation requires a configured site-wide OAuth 1.0a consumer and knowledge of one of its outstanding request tokens; the bound account can be an administrator.

CVSS severity9.0
Critical
EPSS probability0.42%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
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Summary

What happened

Incorrect authorization in Apache Roller 6.1.5 allows remote attackers to bind OAuth request tokens to arbitrary accounts via unsigned requests. The OAuth authorization servlet reads the authorizing user from a submitted userId or xoauth_requestor_id parameter rather than the authenticated session. Exploitation requires a configured site-wide OAuth 1.0a consumer and knowledge of one of its outstanding request tokens; the bound account can be an administrator.

The record

CVE
CVE-2026-82378
Published
Sep 28, 2026
Updated
Sep 28, 2026
Vendor
The Apache Software Foundation
Product
Apache Roller
Classifications
CWE-863
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 28, 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?

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  1. Affected versionversion=6.1.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Apache Software Foundation · Apache Rollerversion=6.1.5

Published CVSS scores

9.0Apache Software Foundation CNACVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

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.

Activity data is delayed. The latest report is Sep 28, 2026.

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No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization

Public exploit references

No public exploit references are available in this record.

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Technologies

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