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CVE-2026-43893
high
CVSS 8.2
Vulnerability in exiftool-vendored (CVE-2026-43893)
Summary
vulnerability in exiftool-vendored (CVE-2026-43893). Data can be tampered with by attackers. Exploitable via ``WriteTask``. Mitigation: upgrade to `35.19.0` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-43893** has been found in exiftool-vendored.
Attackers can target a specific entry point like ``WriteTask`` over the network to misuse the product.
Data can be tampered with by attackers. CVSS score: 8.2/10.
What to do: upgrade exiftool-vendored to **35.19.0** or later.
If unsure, ask your IT team or search "exiftool-vendored CVE-2026-43893" on the vendor's site.
CVE-2026-43893 (exiftool-vendored) — CWE-88 / CVSS v3 8.2
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Attack surface: `WriteTask` / `tags` / `retain` / `numericTags`
Patched: `35.19.0` — 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.
❓ What is the problem
**A vulnerability** (CWE-88) exists in exiftool-vendored. Attackers reach the vulnerable code path via ``WriteTask`` without authentication.
📍 Affected scope
exiftool-vendored — . Attack surface: `WriteTask` / `tags` / `retain` / `numericTags`.
🔥 Severity
Severity: High (CVSS 8.2/10). Data can be tampered with by attackers
🔧 How to fix
Update to **35.19.0**.
🛡️ Workaround
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
🔍 Detection
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run `grep -r 'exiftool-vendored' .` against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response Actions (7 steps)
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r 'exiftool-vendored' . | 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 `exiftool-vendored` を grep し、稼働しているサービス・バージョンを把握する。
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6Apply patch patch
Upgrade exiftool-vendored to 35.19.0ステージング環境で 35.19.0 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と、Step 3 で見つけた異常検知の続報チェックを含めること。
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7Post-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 Step 3 と同じログクエリでアラート再発が無いか継続監視。
Affected packages
npm
exiftool-vendored
[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"35.19.0"}]}]
References
- advisory https://nvd.nist.gov/vuln/detail/CVE-2026-43893
- package https://github.com/photostructure/exiftool-vendored.js
- web https://github.com/photostructure/exiftool-vendored.js/security/advisories/GHSA-cw26-7653-2rp5
- web https://exiftool.org/TagNames
- web https://exiftool.org/exiftool_pod.html#stay_open-FLAG
- web https://github.com/advisories/GHSA-cw26-7653-2rp5