Vulnerability in OpenImageIO (CVE-2026-43905)
Summary
Vulnerability in OpenImageIO (CVE-2026-43905). Successful exploitation can lead to full system takeover. Mitigation: upgrade to 3.0.18.0 or later.
Original description
The description as published by the source.
OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.18.0 and 3.1.13.0, jpeg2000input.cpp:395 computes buffer size as const int bufsize = w * h * ch * buffer_bpp using signed 32-bit arithmetic. When the product exceeds INT_MAX, the result wraps to 0 or a small value. m_buf.resize() allocates an undersized buffer, and subsequent pixel write loops cause heap overflow. Conditional on USE_OPENJPH build flag. This vulnerability is fixed in 3.0.18.0 and 3.1.13.0.
Source: NIST National Vulnerability Database NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-43905 has been found in OpenImageIO.
Successful exploitation can lead to full system takeover. CVSS score: 7.8/10.
What to do: upgrade OpenImageIO to 3.0.18.0 or later.
If unsure, ask your IT team or search "OpenImageIO CVE-2026-43905" on the vendor's site.
CVE-2026-43905 (OpenImageIO) — CWE-190 / CVSS v3 7.8
Attack vector: local / unauthenticated
Patched: 3.0.18.0 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-190) exists in OpenImageIO.
Check the vendor advisory for the affected versions of OpenImageIO.
Severity: High (CVSS 7.8/10). Successful exploitation can lead to full system takeover.
Update to 3.0.18.0.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'OpenImageIO' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r 'OpenImageIO' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
OpenImageIOを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade OpenImageIO to 3.0.18.0ステージング環境で 3.0.18.0 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
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3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Debian DEBIAN-CVE-2026-43905 openimageio
- Ubuntu UBUNTU-CVE-2026-43905 openimageio
References
- advisory github.com
- advisory github.com
- advisory nvd.nist.gov