OS Command Injection in github.com/OliveTin/OliveTin (CVE-2026-67438)
Summary
OS command injection in github.com/OliveTin/OliveTin (CVE-2026-67438). Successful exploitation can lead to full system takeover. Mitigation: upgrade to 0.0.0-20260708084548-995ff79736f2 or later.
Original description
The description as published by the source.
Summary
OliveTin's checkShellArgumentSafety() function maintains a blocklist of argument types unsafe for Shell mode actions, but does not include regex:-prefixed types. Because regex: support was added independently via typeSafetyCheckRegex(), any Shell mode action using a regex:-typed argument bypasses the safety check unconditionally. The unvalidated value is then interpolated directly into the sh -c command string via Go's text/template with no escaping, enabling shell injection. Notably, even restrictive-looking patterns are exploitable — for example, a pattern blocking common shell metacharacters remains bypassable via POSIX command substitution.
Details
OliveTin is an open source web UI for running pre-configured shell commands. In the OliveTin service component, the function checkShellArgumentSafety() in service/internal/executor/arguments.go enforces a blocklist of argument types that are unsafe for use in Shell mode actions (actions that execute via sh -c). The blocklist includes password, very_dangerous_raw_string, url, email, and raw_string_multiline. It does not handle custom regex: prefixed argument types.
Custom regex: types are supported by a separate function, typeSafetyCheckRegex(), which checks whether a submitted value matches the provided pattern. These two functions evolved independently: when regex: prefix support was added to typeSafetyCheckRegex, checkShellArgumentSafety was not updated to treat regex: types as unsafe for Shell mode. As a re…
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-2026-67438 has been found in github.com/OliveTin/OliveTin.
Successful exploitation can lead to full system takeover. CVSS score: 6.6/10.
What to do: upgrade github.com/OliveTin/OliveTin to 0.0.0-20260708084548-995ff79736f2 or later.
If unsure, ask your IT team or search "github.com/OliveTin/OliveTin CVE-2026-67438" on the vendor's site.
CVE-2026-67438 (github.com/OliveTin/OliveTin) — CWE-78 / CVSS v3 6.6
Attack vector: remote (network-reachable) / no user interaction
Patched: 0.0.0-20260708084548-995ff79736f2 — 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.
OS command injection (CWE-78) exists in github.com/OliveTin/OliveTin.
Check the vendor advisory for the affected versions of github.com/OliveTin/OliveTin.
Severity: Medium (CVSS 6.6/10). Successful exploitation can lead to full system takeover.
Update to 0.0.0-20260708084548-995ff79736f2.
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 'github.com/OliveTin/OliveTin' . 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
-
1Identify exposure identify
grep -r 'github.com/OliveTin/OliveTin' . | 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
github.com/OliveTin/OliveTin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 github.com/OliveTin/OliveTin to 0.0.0-20260708084548-995ff79736f2ステージング環境で 0.0.0-20260708084548-995ff79736f2 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。
-
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。
Affected packages
References
- advisory nvd.nist.gov
- package github.com
- web github.com
- web github.com
- web github.com
- web github.com