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Description

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.

PUBLISHED Reserved 2026-07-08 | Published 2026-07-13 | Updated 2026-07-14 | Assigner VulnCheck




MEDIUM: 6.8CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N

MEDIUM: 6.1CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

Problem types

Out-of-bounds Read

Product status

Default status
affected

3.0.0 (semver)
affected

968972a918b5ed2d534295b639c54449d7de11cd (git)
unaffected

Credits

Saad ELHARAJ finder

VulnCheck finder

References

projects.blender.org/blender/blender/pulls/161273 (Pull Request) issue-tracking

projects.blender.org/...72a918b5ed2d534295b639c54449d7de11cd (Patch Commit) patch

www.vulncheck.com/...ounds-read-via-crafted-blend-sdna-block third-party-advisory

cve.org (CVE-2026-60103)

nvd.nist.gov (CVE-2026-60103)

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