CVE-2026-59186

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Source
https://cve.org/CVERecord?id=CVE-2026-59186
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-59186.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-59186
Aliases
  • GHSA-f667-c4wm-c8gq
Downstream
Related
Published
2026-08-25T16:35:58.364Z
Modified
2026-08-27T11:46:42.199049539Z
Severity
  • 7.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H CVSS Calculator
Summary
OpenEXR: Heap out-of-bounds write in TiledRgbaInputFile via integer overflow on 32-bit (ILP32) builds
Details

OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. In versions before 3.2.11, 3.3.0 through 3.3.12, and 3.4.0 through 3.4.13, a crafted tiled EXR can trigger a heap out-of-bounds write on 32-bit/ILP32 builds when read through the public TiledRgbaInputFile RGBA API. The file uses a small 40x40 dataWindow but a 65537x65537 tile size. On ILP32, the Array2D<Rgba> tile-conversion buffer size calculation overflows, allocates a much smaller heap buffer, and tile decode writes past that allocation. This issue is fixed in versions 3.2.11, 3.3.13, and 3.4.14.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59186.json",
    "cwe_ids": [
        "CWE-122",
        "CWE-190",
        "CWE-787"
    ],
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/academysoftwarefoundation/openexr

Affected ranges

Type
GIT
Repo
https://github.com/academysoftwarefoundation/openexr
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
ba4b1af3a096e8f69e1836b210976585189a5fca
Introduced
c7d3eac70ccde2c4ed484c6638b83ba872f71464
Fixed
ca50a6bb1f64c4d53362e4b67aec33e67cb7d425
Introduced
20a65852895894434bea88613f6d29ac8e88bd6e
Fixed
777d231a179de1711d2a942810d9559216ab3f4c
Database specific
Show details 
{
    "source": "AFFECTED_FIELD",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "3.2.11"
        },
        {
            "introduced": "3.3.0"
        },
        {
            "fixed": "3.3.13"
        },
        {
            "introduced": "3.4.0"
        },
        {
            "fixed": "3.4.14"
        }
    ]
}

Affected versions

Other
OPENEXR_1_0_4
v1.*
v1.7.1
v2.*
v2.0.0
v2.0.0.GM
v2.0.1
v2.1.0
v2.3.0
v2.4.0
v2.4.0-beta.1
v2.5.0
v3.*
v3.0.0-beta
v3.2.0
v3.2.0-rc
v3.2.0-rc2
v3.2.0-rc3
v3.2.0-rc4
v3.2.1
v3.2.1-rc
v3.2.10
v3.2.10-rc
v3.2.2
v3.2.2-rc
v3.2.2-rc2
v3.2.3
v3.2.3-rc
v3.2.3-rc2
v3.2.4
v3.2.4-rc
v3.2.4-rc2
v3.2.5
v3.2.5-rc
v3.2.6
v3.2.6-rc
v3.2.7
v3.2.7-rc
v3.2.8
v3.2.8-rc
v3.2.9
v3.2.9-rc
v3.3.0
v3.3.0-rc2
v3.3.1
v3.3.1-rc
v3.3.10
v3.3.10-rc
v3.3.10-rc2
v3.3.11
v3.3.11-rc3
v3.3.12
v3.3.12-rc
v3.3.2
v3.3.2-rc
v3.3.2-rc2
v3.3.2-rc3
v3.3.2-rc4
v3.3.3
v3.3.3-rc
v3.3.3-rc1
v3.3.4
v3.3.4-rc
v3.3.5
v3.3.5-rc
v3.3.5-rc3
v3.3.6
v3.3.6-rc
v3.3.6-rc2
v3.3.6-rc3
v3.3.6-rc4
v3.3.7
v3.3.7-rc
v3.3.7-rc2
v3.3.7-rc3
v3.3.7-rc4
v3.3.8
v3.3.8-rc
v3.3.9
v3.3.9-rc
v3.3.9-rc2
v3.4.0
v3.4.1
v3.4.1-rc
v3.4.1-rc2
v3.4.10
v3.4.10-rc
v3.4.11
v3.4.11-rc
v3.4.11-rc2
v3.4.11-rc3
v3.4.12
v3.4.12-rc2
v3.4.13
v3.4.13-rc
v3.4.13-rc2
v3.4.13-rc3
v3.4.2
v3.4.2-rc
v3.4.2-rc2
v3.4.3
v3.4.3-rc
v3.4.3-rc2
v3.4.3-rc3
v3.4.4
v3.4.4-rc
v3.4.4-rc2
v3.4.5
v3.4.5-rc
v3.4.6
v3.4.6-rc
v3.4.7
v3.4.7-rc
v3.4.8
v3.4.8-rc
v3.4.9
v3.4.9-rc

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-59186.json"