TI-2026-56799 Aliases CVE-2026-82378 GHSA-c34v-mgwv-92x6

Apache Roller: OAuth authorization endpoint trusts request-supplied identity

MEDIUM 41CWE-863Published 2026-09-28 · Updated 2026-09-29

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: High
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-863.

Summary

Incorrect Authorization in the OAuth 1.0a authorization endpoint of Apache Roller 6.1.5 allows an unauthenticated remote attacker who learns an outstanding request token for a configured site-wide consumer to bind that token to an arbitrary user account, including an administrator, by submitting an unsigned authorization request. The endpoint derives the authorizing identity from a request-supplied value rather than the authenticated session. Only installations that configure an OAuth 1.0a site-wide consumer are affected, and exploitation requires knowledge of one of its outstanding request tokens. Users are recommended to upgrade to Apache Roller 6.1.6 or later, which binds authorization to the logged-in session.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00421 36th 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-2026-82378
2026-10-03 Alias added: GHSA-c34v-mgwv-92x6

References

Patch 1

https://github.com/apache/roller/pull/165

Advisory 1

https://lists.apache.org/thread/fq512gy70zj9yx8v4c4zm54x43wqb04b

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Sources

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