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CVE-2026-39886

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. Versions 3.4.0 through 3.4.9 have a signed integer overflow vulnerability in OpenEXR's HTJ2K (High-Throughput JPEG 2000) decompression path. The `ht_undo_impl()` function in `src/lib/OpenEXRCore/internal_ht.cpp` accumulates a bytes-per-line value (`bpl`) using a 32-bit signed integer with no overflow guard. A crafted EXR file with 16,385 FLOAT channels
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:291088e5e7c6623335f6d6f115700553cb737d14f3cff2040ac3e6adea7280ed
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"openexr","vendor":"AcademySoftwareFoundation","versions":[{"status":"affected","version":">= 3.4.0, < 3.4.10"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c94b5dbc5dc277a17062ec3339625ec199a74c2d4ed925e5b0924305bb33d356 · sha256:f6ae5b2cd79278d8… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:c94b5dbc5dc277a17062ec3339625ec199a74c2d4ed925e5b0924305bb33d356 · sha256:f6ae5b2cd79278d8… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-190","description":"CWE-190: Integer Overflow or Wraparound","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c94b5dbc5dc277a17062ec3339625ec199a74c2d4ed925e5b0924305bb33d356 · sha256:f6ae5b2cd79278d8… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.10","tags":["x_refsource_MISC"],"url":"https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.10"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c94b5dbc5dc277a17062ec3339625ec199a74c2d4ed925e5b0924305bb33d356 · sha256:f6ae5b2cd79278d8… · /containers/cna/references/1
{"name":"https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-r3mr-mx8q-jcw5","tags":["x_refsource_CONFIRM"],"url":"https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-r3mr-mx8q-jcw5"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c94b5dbc5dc277a17062ec3339625ec199a74c2d4ed925e5b0924305bb33d356 · sha256:f6ae5b2cd79278d8… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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