Corteza Unauthenticated Attachment Access via Compose Attachment Endpoints
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-863.
Summary
Corteza through 2024.9.10 contains an incorrect authorization flaw (CWE-863) in its compose attachment endpoints. An unauthenticated remote attacker who knows a private record or module attachment id can request the original or preview route without a token or signature and download files across namespace and record permission boundaries.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
Corteza through 2024.9.10 contains an incorrect authorization vulnerability in compose attachment endpoints that allows unauthenticated attackers to download private attachments by setting the URL kind segment to page, icon, or namespace. Attackers who know a private record or module attachment id can request the original or preview route without a token or signature to retrieve files across namespace and record permission boundaries.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
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 |
|---|---|---|---|---|---|
| cortezaproject | corteza | up to 2024.9.10 | — | No fix listed | CNA |
- corteza Vendorcortezaproject Affected up to 2024.9.10 Fixed in — No fix listed CNA
Remediation
The sources list no fixed version for Corteza.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Timeline
- 2026-10-11 Threatist record created from CVE-2026-108729
- 2026-10-11 Alias added: GHSA-8hq6-x78m-7h79
- 2026-10-12 Priority changed: MEDIUM → LOW
- 2026-10-14 CISA SSVC decision points changed
References
Other 3
- https://github.com/cortezaproject/corteza/blob/3835dfc4ac8bd89381753f09042ad147a4502576/server/compose/rest/attachment.go#L79-L122
- https://github.com/cortezaproject/corteza/blob/3835dfc4ac8bd89381753f09042ad147a4502576/server/compose/service/attachment.go#L123-L142
- https://github.com/cortezaproject/corteza
More cortezaproject vulnerabilities
- TI-2026-05341 Corteza 2024.9.8 - SQL Injection in MSSQL JSON-path meta filter via incorrect T-SQL string escaping CVSS 4.0MEDIUM 6.0
Sources
- CVE-2026-108729 · CVE Program
- CVE-2026-108729 · NVD
- FIRST EPSS
- GHSA-8hq6-x78m-7h79 · GitHub Advisory Database · CC BY 4.0
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