CVE-2026-38976: n/a
mrubyc through 3.4.1 was found to contain a NULL pointer dereference in src/vm.c in op_super() / OP_SUPER due to a missing runtime guard for top-level super.
AI Analysis
Technical Summary
CVE-2026-38976 is a NULL pointer dereference vulnerability in mrubyc through version 3.4.1. The issue exists in the op_super() function in src/vm.c, where a missing runtime guard for top-level super calls leads to dereferencing a NULL pointer. This results in an application crash, causing a denial of service. The vulnerability has a CVSS 3.1 base score of 7.5, indicating high severity, with network attack vector, low attack complexity, no privileges or user interaction required, and impact limited to availability.
Potential Impact
Successful exploitation causes a denial of service by crashing the mrubyc runtime due to a NULL pointer dereference. There is no confidentiality or integrity impact reported. The vulnerability can be triggered remotely without authentication or user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround has been documented at this time.
CVE-2026-38976: n/a
Description
mrubyc through 3.4.1 was found to contain a NULL pointer dereference in src/vm.c in op_super() / OP_SUPER due to a missing runtime guard for top-level super.
CVSS v3.1
Score 7.5high
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-38976 is a NULL pointer dereference vulnerability in mrubyc through version 3.4.1. The issue exists in the op_super() function in src/vm.c, where a missing runtime guard for top-level super calls leads to dereferencing a NULL pointer. This results in an application crash, causing a denial of service. The vulnerability has a CVSS 3.1 base score of 7.5, indicating high severity, with network attack vector, low attack complexity, no privileges or user interaction required, and impact limited to availability.
Potential Impact
Successful exploitation causes a denial of service by crashing the mrubyc runtime due to a NULL pointer dereference. There is no confidentiality or integrity impact reported. The vulnerability can be triggered remotely without authentication or user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround has been documented at this time.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-04-06T00:00:00.000Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a4c23d727e9c7971949275f
Added to database: 07/06/2026, 21:53:27 UTC
Last enriched: 07/14/2026, 08:55:00 UTC
Last updated: 08/19/2026, 10:57:08 UTC
Views: 76
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