CVE-2026-82377Network attack vectorHinoki check available

Cross-weblog content access via unchecked XML-RPC permissions

Published Sep 28, 2026 · Updated Sep 28, 2026

Missing authorization in Apache Roller 6.1.5 allows remote authenticated users to read, modify, or delete other weblogs' content via XML-RPC. The Blogger and MetaWeblog handlers authenticate callers but fail to check permissions on the weblog or entry each operation affects. Exploitation requires the non-default global XML-RPC setting to be enabled; affected operations can then cross weblog boundaries.

CVSS severity9.9
Critical
EPSS probability0.53%
Next 30 days · Oct 17, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Missing authorization in Apache Roller 6.1.5 allows remote authenticated users to read, modify, or delete other weblogs' content via XML-RPC. The Blogger and MetaWeblog handlers authenticate callers but fail to check permissions on the weblog or entry each operation affects. Exploitation requires the non-default global XML-RPC setting to be enabled; affected operations can then cross weblog boundaries.

The record

CVE
CVE-2026-82377
Published
Sep 28, 2026
Updated
Sep 28, 2026
Vendor
The Apache Software Foundation
Product
Apache Roller
Classifications
T1213
Attack vector
network
Privileges
authenticated

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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.1.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

The Apache Software Foundation · Apache Rollerversion=6.1.5

Published CVSS scores

9.9The Apache Software FoundationCVSS:3.1/AV:N/AC:L/PR:L/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1213Data from Information Repositories

Public exploit references

No public exploit references are available in this record.

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Technologies

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