CVE-2026-34543
- Source
- https://cve.org/CVERecord?id=CVE-2026-34543
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-34543.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-34543
- Aliases
- Downstream
- Related
- Published
- 2026-04-01T20:56:18.776Z
- Modified
- 2026-08-12T15:33:36.261976Z
- Severity
-
- 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- OpenEXR: Heap information disclosure in PXR24 decompression via unchecked decompressed size (undo_pxr24_impl)
- Details
-
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From version 3.4.0 to before version 3.4.8, sensitive information from heap memory may be leaked through the decoded pixel data (information disclosure). This occurs under default settings; simply reading a malicious EXR file is sufficient to trigger the issue, without any user interaction. This issue has been patched in version 3.4.8.
- Database specific
{ "cwe_ids": [ "CWE-908" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34543.json", "cna_assigner": "GitHub_M" }- References
-
- https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.8
- https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-vc68-257w-m432
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34543.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-34543
- https://github.com/AcademySoftwareFoundation/openexr/commit/5f6d0aaa9e43802917af7db90f181e88e083d3b8
Affected packages
Git / github.com/academysoftwarefoundation/openexr
Affected ranges
- Type
- GIT
- Repo
- https://github.com/academysoftwarefoundation/openexr
- Events
-
IntroducedFixedIntroducedFixedIntroducedFixedFixed
- Database specific
-
Show details
{ "cpe": "cpe:2.3:a:openexr:openexr:*:*:*:*:*:*:*:*", "extracted_events": [ { "introduced": "3.2.0" }, { "fixed": "3.2.7" }, { "introduced": "3.3.0" }, { "fixed": "3.3.9" }, { "introduced": "3.4.0" }, { "fixed": "3.4.8" } ], "source": [ "CPE_RANGE", "REFERENCES" ] }
Affected versions
v3.*
v3.2.0
v3.2.0-rc4
v3.2.1
v3.2.1-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
v3.3.0
v3.3.0-rc2
v3.3.1
v3.3.1-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-rc
v3.4.0
v3.4.1
v3.4.1-rc
v3.4.1-rc2
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
Database specific
vanir_signatures_modified
"2026-08-12T15:33:36Z"
vanir_signatures
[
{
"id": "CVE-2026-34543-3d80332c",
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1",
"digest": {
"length": 2685.0,
"function_hash": "44151273001446452457448739126027442088"
},
"source": "https://github.com/academysoftwarefoundation/openexr/commit/5f6d0aaa9e43802917af7db90f181e88e083d3b8",
"target": {
"function": "undo_pxr24_impl",
"file": "src/lib/OpenEXRCore/internal_pxr24.c"
}
},
{
"id": "CVE-2026-34543-6e8057e1",
"deprecated": false,
"signature_type": "Line",
"signature_version": "v1",
"digest": {
"threshold": 0.9,
"line_hashes": [
"142379751201319677196416975435564567707",
"20822360424426942524374707071776756375",
"337808714716322119090538726074599055188",
"39438277022660984668471930153220376618",
"319441612720358139934183944993031537730",
"313075146506780347465870019193431059474",
"337808714716322119090538726074599055188",
"39438277022660984668471930153220376618",
"230175006399177666192915940564477223979",
"5704160762892126089953367845991729162",
"1662035350356008185251265146413981002",
"30689591858284747202499575565963209206"
]
},
"source": "https://github.com/academysoftwarefoundation/openexr/commit/5f6d0aaa9e43802917af7db90f181e88e083d3b8",
"target": {
"file": "src/lib/OpenEXRCore/internal_pxr24.c"
}
}
]
source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-34543.json"