TI-2026-56798 Aliases CVE-2026-82377 GHSA-crwh-hjp8-p7q9

Apache Roller: Missing weblog authorization in XML-RPC Blogger/MetaWeblog handlers

MEDIUM 43CWE-862Published 2026-09-28 · Updated 2026-09-29

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-862.

Summary

Missing Authorization in Apache Roller 6.1.5 allows an authenticated user to read, modify, or delete weblog content belonging to other weblogs through the legacy XML-RPC Blogger and MetaWeblog APIs, because the handlers authenticate the caller but do not verify the caller's permission on the weblog or entry actually affected. Only installations that enable the non-default global XML-RPC setting are affected; the per-weblog API flag defaults to enabled for UI-created weblogs. Users are recommended to upgrade to Apache Roller 6.1.6 or later, which applies an explicit per-method permission check, or to keep the XML-RPC feature disabled.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00414 35th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Apache	Apache Roller	6.1.5	—	No fix listed	CNA

Apache Roller VendorApache Affected 6.1.5 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:apache:roller::::::::	—	—	Apache

cpe:2.3:a:apache:roller:*:*:*:*:*:*:*:* Versions — — ·Apache

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-82377
2026-10-03 Alias added: GHSA-crwh-hjp8-p7q9

References

Patch 1

https://github.com/apache/roller/pull/164

Advisory 1

https://lists.apache.org/thread/phxx56n0w6jjqzto2my3ot8hto0qjvn8

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Sources

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