Vulnerability in github.com/OliveTin/OliveTin (CVE-2026-53541)
Summary
Vulnerability in github.com/OliveTin/OliveTin (CVE-2026-53541). Risk of unauthorized operations or information disclosure. Exploitable via filterToDefinedArgumentsOnly. Mitigation: upgrade to 0.0.0-20260531214440-ebffd9f040f7 or later.
Original description
The description as published by the source.
OliveTin gives access to predefined shell commands from a web interface. The filterToDefinedArgumentsOnly function in the executor is intended to discard any arguments not explicitly defined in the action's configuration. However, prior to commit ebffd9f040f791208aee1db2e5a8aecd1e3e603d, a special case allows any argument whose name starts with ot_ to bypass this filter. While two system arguments (ot_executionTrackingId and ot_username) are injected by OliveTin and overridden, all other ot_-prefixed arguments supplied by the user pass through unmodified. These bypassed arguments are not type-checked — the validation loop only iterates over the action's defined arguments, so ot_-prefixed arguments skip all type safety checks entirely; set as environment variables — via buildEnv(), with completely unvalidated values, and passed to the executed command; and included in the template context — available as .Arguments.ot_* in template rendering. Commit ebffd9f040f791208aee1db2e5a8aecd1e3e603d contains a patch.
Source: GitHub Security Advisories (Global) 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-2026-53541 has been found in github.com/OliveTin/OliveTin.
Attackers can target a specific entry point like filterToDefinedArgumentsOnly over the network to misuse the product.
Risk of unauthorized operations or information disclosure. CVSS score: 4.3/10.
What to do: upgrade github.com/OliveTin/OliveTin to 0.0.0-20260531214440-ebffd9f040f7 or later.
If unsure, ask your IT team or search "github.com/OliveTin/OliveTin CVE-2026-53541" on the vendor's site.
CVE-2026-53541 (github.com/OliveTin/OliveTin) — CWE-20 / CVSS v3 4.3
Attack vector: remote (network-reachable) / no user interaction
Attack surface: filterToDefinedArgumentsOnly / ot_ / ot_executionTrackingId / ot_username
Patched: 0.0.0-20260531214440-ebffd9f040f7 — 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-20) exists in github.com/OliveTin/OliveTin. Attackers reach the vulnerable code path via filterToDefinedArgumentsOnly.
Check the vendor advisory for the affected versions of github.com/OliveTin/OliveTin. Attack surface: filterToDefinedArgumentsOnly / ot_ / ot_executionTrackingId / ot_username.
Severity: Medium (CVSS 4.3/10). Risk of unauthorized operations or information disclosure.
Update to 0.0.0-20260531214440-ebffd9f040f7.
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 0.0.0-20260531214440-ebffd9f040f7ステージング環境で 0.0.0-20260531214440-ebffd9f040f7 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 github.com
- advisory github.com
- advisory nvd.nist.gov
- package github.com
- patch github.com
- web github.com