Vulnerability in Dani Garcia (CVE-2026-43912)
Summary
Vulnerability in Dani Garcia (CVE-2026-43912). Confidential information can be exposed externally. Mitigation: upgrade to 1.35.5 or later.
Original description
The description as published by the source.
Vaultwarden is a Bitwarden-compatible server written in Rust. Prior to 1.35.5, Vaultwarden does not enforce that a groups_users.users_organizations_uuid entry belongs to the same organization as groups.groups_uuid, or a collections_groups.collections_uuid entry belongs to the same organization as collections_groups.groups_uuid. Multiple organization group-management endpoints accept arbitrary MembershipId and CollectionId values and persist them directly without verifying org consistency. This lets an attacker who is Admin in Organization A, and only a low-privileged member in Organization B bind their Org B membership UUID into an Org A group, then use that foreign group relationship to gain unauthorized access to Org B vault data. With an accessAll=true Org A group, the attacker can make /api/sync and /api/ciphers enumerate Org B ciphers. Once those unauthorized sync results reveal Org B collection IDs, the attacker can also bind those foreign collection IDs to the Org A group and turn the same flaw into write access over Org B items. This vulnerability is fixed in 1.35.5.
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-2026-43912 has been found in Dani Garcia.
Confidential information can be exposed externally. CVSS score: 8.7/10.
What to do: upgrade Dani Garcia to 1.35.5 or later.
If unsure, ask your IT team or search "Dani Garcia CVE-2026-43912" on the vendor's site.
CVE-2026-43912 (Dani Garcia) — CWE-285 / CVSS v3 8.7
Attack vector: remote (network-reachable) / no user interaction
Patched: 1.35.5 — 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-285) exists in Dani Garcia.
Check the vendor advisory for the affected versions of Dani Garcia.
Severity: High (CVSS 8.7/10). Confidential information can be exposed externally.
Update to 1.35.5.
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. Audit SBOM/dependencies 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
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで Dani Garcia を使っているサービスとバージョンを洗い出す。
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2Apply patch patch
Upgrade Dani Garcia to 1.35.5ステージング環境で 1.35.5 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。
References
- exploit github.com