Vulnerability in Zammad (CVE-2026-34782)
Summary
Vulnerability in Zammad (CVE-2026-34782). Risk of unauthorized operations or information disclosure. Exploitable via POST /api/v1/ai_assistance/text_tools/. Mitigation: upgrade to 7.0.1 or later.
Original description
The description as published by the source.
Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1 and 6.5.4, the REST endpoint POST /api/v1/ai_assistance/text_tools/:id was not checking if a user is privileged to use the text tool, resulting in being able to use it in all situations. This vulnerability is fixed in 7.0.1 and 6.5.4.
Source: NIST National Vulnerability Database NVD
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-2026-34782 has been found in Zammad.
Attackers can target a specific entry point like POST /api/v1/ai_assistance/text_tools/ over the network to misuse the product.
Risk of unauthorized operations or information disclosure. CVSS score: 4.3/10.
What to do: upgrade Zammad to 7.0.1 or later.
If unsure, ask your IT team or search "Zammad CVE-2026-34782" on the vendor's site.
CVE-2026-34782 (Zammad) — CWE-862 / CVSS v3 4.3
Attack vector: remote (network-reachable) / no user interaction
Attack surface: POST /api/v1/ai_assistance/text_tools/
Patched: 7.0.1 — 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-862) exists in Zammad. Attackers reach the vulnerable code path via POST /api/v1/ai_assistance/text_tools/.
Check the vendor advisory for the affected versions of Zammad. Attack surface: POST /api/v1/ai_assistance/text_tools/.
Severity: Medium (CVSS 4.3/10). Risk of unauthorized operations or information disclosure.
Update to 7.0.1.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual POST /api/v1/ai_assistance/text_tools/ requests with malformed payloads or SQL meta-characters. Run grep -r 'Zammad' . 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 'Zammad' . | 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
Zammadを grep し、稼働しているサービス・バージョンを把握する。 -
2Hunt for indicators of compromise detect
grep 'POST /api/v1/ai_assistance/text_tools/' /var/log/nginx/access.log | grep -E '(unusual_payload|sqli_pattern)'アクセスログで
POST /api/v1/ai_assistance/text_tools/への異常なリクエスト (不正な認証ヘッダ・SQLメタ文字)を過去 30〜90日分捜索。WAF/SIEM があれば該当パスのアラート発火履歴を確認。 -
3Apply patch patch
Upgrade Zammad to 7.0.1ステージング環境で 7.0.1 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 2 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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4Post-deployment verification verify
Replay attack against POST /api/v1/ai_assistance/text_tools/ on staging to confirm patch closes the vector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 2 と同じログクエリでアラート再発が無いか継続監視。