CVE-2026-92970 Hubzero CVE debrief

Who should care

Defenders responsible for systems using HUBzero CMS, particularly those with authenticated project members, should assess exposure and potential impact. Reviewing file upload handlers and restricting file upload permissions can help mitigate the vulnerability.

Why it matters

CVE-2026-92970 is a path traversal vulnerability in HUBzero CMS that allows authenticated project members to write arbitrary files outside the project repository, potentially enabling code execution. Defenders should prioritize verifying exposure and assessing potential impact, focusing on systems with authenticated project members and reviewing file upload handlers for traversal sequences.

• Potential code execution with web server privileges
• Arbitrary file writes outside the project repository
• Increased risk for attackers to manipulate file uploads
• Verification of file upload handler security is required

Technical summary

The vulnerability is caused by a path traversal issue in the file upload handlers of HUBzero CMS through 2.2.32. Authenticated project members can supply traversal sequences in upload parameters to write files to attacker-chosen paths with web server privileges, potentially enabling code execution. The vulnerability can be mitigated by reviewing file upload handlers and restricting file upload permissions. Defenders should prioritize verifying exposure and assessing potential impact, focusing on systems with authenticated project members. The CVE record and NVD entry provide details on the vulnerability, including its description, CVSS score, and affected versions.

Defensive priority

Defenders should prioritize verifying exposure and assessing potential impact, focusing on systems with authenticated project members and reviewing file upload handlers for traversal sequences.

Recommended defensive actions

• Verify exposure by reviewing file upload handlers for traversal sequences
• Assess potential impact on systems with authenticated project members
• Review and restrict file upload permissions for authenticated project members
• Monitor for suspicious file writes outside the project repository
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, including its description, CVSS score, and affected versions. However, the corpus does not establish versions, exploitation, impact, or remediation beyond potential code execution.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.