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+# Incident Response Plan
+
+## Reporting a Vulnerability
+
+Please see [the latest guidelines](https://github.com/ohmyzsh/ohmyzsh/blob/master/SECURITY.md) for instructions.
+
+## Phases
+
+### Triage
+
+1. Is this a valid security vulnerability?
+
+  - [ ] It affects our CI/CD or any of our repositories.
+    - [ ] For ohmyzsh/ohmyzsh, it affects the latest commit.
+    - [ ] For others, it affects the latest commit on the default branch.
+  - [ ] It affects a third-party dependency:
+    - [ ] Zsh or git
+    - [ ] For a plugin, the vulnerability is a result of our usage of the dependency.
+
+2. What's the scope of the vulnerability?
+
+  - [ ] Our codebase.
+  - [ ] A direct third-party dependency (Zsh, git, other plugins).
+  - [ ] An indirect third-party dependency.
+  - [ ] Out of scope, a third-party dependency that is the responsibility of the user.
+  - [ ] Out of scope, any other case (edit this plan and add the details).
+
+3. Is the vulnerability actionable?
+
+  - [ ] Yes, we can submit a fix.
+  - [ ] Yes, we can disable a feature.
+  - [ ] Yes, we can mitigate the risk.
+  - [ ] Yes, we can remove a vulnerable dependency.
+  - [ ] Yes, we can apply a workaround.
+  - [ ] Yes, we can apply a patch to a vulnerable dependency ([example for CVE-2021-45444](https://github.com/ohmyzsh/ohmyzsh/blob/cb72d7dcbf08b435c7f8a6470802b207b2aa02c3/lib/vcs_info.zsh)).
+  - [ ] No, the vulnerability is not actionable.
+
+4. What's the impact of the vulnerability?
+
+  Assess using the *CIA* triad:
+
+  - **Confidentiality**: example: report or sharing of secrets.
+  - **Integrity**: affects the integrity of the system (deletion, corruption or encryption of data, OS file corruption, etc.).
+  - **Availability**: denial of login, deletion of required files to boot / login, etc.
+
+5. What's the exploitability of the vulnerability?
+
+  Consider how easy it is to exploit, and if it affects all users or requires specific configurations.
+
+6. What's the severity of the vulnerability?
+
+  You can use the [CVSS v3.1](https://www.first.org/cvss/specification-document) to assess the severity of the vulnerability.
+
+7. When was the vulnerability introduced?
+
+  - Find the responsible code path.
+  - Find the commit or Pull Request that introduced the vulnerability.
+
+8. Who are our security contacts?
+
+  Assess upstream or downstream contacts, and their desired channels of security.
+
+  > TODO: add a list of contacts.
+
+### Mitigation
+
+- **Primary focus:** removing possibility of exploitation fast.
+- **Secondary focus:** addressing the root cause.
+
+> [!IMPORTANT]
+> Make sure to test that the mitigation works as expected, and does not introduce new vulnerabilities.
+> When deploying a patch, make sure not to disclose the vulnerability in the commit message or PR description.
+
+> TODO: introduce a fast-track update process for security patches.
+
+### Disclosure
+
+Primary goal: inform our users about the vulnerability, and whether they are affected or not affected based on information they should be able to check themselves in a straightforward way.
+
+> TODO: add a vulnerability disclosure template.
+
+### Learn
+
+- Document the vulnerability, steps performed, and lessons learned.
+- Document the timeline of events.
+- Document and address improvements on the Security Incident Response Plan.
+- Depending on the severity of the vulnerability, consider disclosing the root cause or not based on likely impact on users and estimated potential victims still affected.