Blender up to 5.1.2 SDNA Block sdna_expand_names member_index out-of-bounds

Summaryinfo

A vulnerability marked as problematic has been reported in Blender up to 5.1.2. Affected by this issue is the function sdna_expand_names of the component SDNA Block. The manipulation of the argument member_index leads to out-of-bounds. This vulnerability is uniquely identified as CVE-2026-60103. Local access is required to approach this attack. No exploit exists.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Blender up to 5.1.2. This issue affects the function sdna_expand_names of the component SDNA Block. The manipulation of the argument member_index with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Blender 3.0.0 through 5.1.2 contains an out-of-bounds read vulnerability that allows attackers to trigger a crash or read adjacent heap memory by supplying a crafted .blend file with a malicious signed short member_index value in the SDNA block. The member_index field is used as an array index into the sdna->members[] array in sdna_expand_names() without bounds validation, allowing any value outside the allocated range to produce an invalid pointer subsequently passed to strlen(), resulting in a SIGSEGV crash or unintended heap memory disclosure.

The advisory is shared at projects.blender.org. The identification of this vulnerability is CVE-2026-60103 since 07/08/2026. The exploitation is known to be easy. An attack has to be approached locally. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

• Blender

Version

• 5.1.0
• 5.1.1
• 5.1.2

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CPE 2.2info

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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