CVE-2026-3950

A vulnerability was identified in strukturag libheif up to 1.21.2. This impacts the function Track::load of the file libheif/sequences/track.cc of the component stsz/stts. The manipulation leads to out-of-bounds read. The attack needs to be performed locally. The exploit is publicly available and might be used. Applying a patch is the recommended action to fix this issue. The patch available is inofficial and not approved yet.

Database specific

{
    "cna_assigner":  "VulDB",
    "cwe_ids":  [
        "CWE-119",
        "CWE-125"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/3xxx/CVE-2026-3950.json"
}

References

Affected packages

Git / github.com/strukturag/libheif

Affected ranges

Type

GIT

Repo

https://github.com/strukturag/libheif

Events

Introduced

81b09baa38ac8654d34d0f8b7780c44addfc7893

Last Affected

62f1b8c76ed4d8305071fdacbe74ef9717bacac5

Database specific

Show details

{
    "extracted_events":  [
        {
            "introduced":  "1.21.0"
        },
        {
            "last_affected":  "1.21.0"
        },
        {
            "introduced":  "1.21.1"
        },
        {
            "last_affected":  "1.21.1"
        },
        {
            "introduced":  "1.21.2"
        },
        {
            "last_affected":  "1.21.2"
        }
    ],
    "source":  "AFFECTED_FIELD"
}

Affected versions

1.*

1.21.0

1.21.1

1.21.2

v1.*

v1.21.0

v1.21.1

v1.21.2

Database specific

source

"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-3950.json"