# CVE-2024-58354: cal.com Repository Takeover via pull_request_target Workflow

> Attackers can execute arbitrary code with write permissions via pull_request_target workflows, compromising the repository integrity.

- **Severity:** High 8.5 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 23 Jul 2026
- **Updated:** 24 Jul 2026
- **Also known as:** GHSA-hv2p-r28v-79q5, GHSA-p3f6-52gv-cj7m

## What is CVE-2024-58354?

CVE-2024-58354 is a high-severity code injection vulnerability in calcom cal.diy, published on 23 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

cal.com (calcom repository, later renamed cal.diy) is affected by a repository takeover vulnerability in its GitHub Actions workflows. The workflow pr.yml uses the pull_request_target trigger with the repository's default write permissions and passes them down to check-types.yml. check-types.yml then performs a 'dangerous' checkout of the attacker-submitted pull request code (via the dangerous-git-checkout action) and subsequently executes it (through yarn install and package.json scripts). An attacker can open a pull request whose code runs arbitrary commands with the repository's write-scoped GITHUB_TOKEN, allowing them to push commits, merge or mutate pull requests, add or delete comments, and delete or force-push branches, thereby compromising the repository. The main branch is affected; no patched version is available.

Weakness: CWE-77 (Improper Neutralization of Special Elements used in a Command)

## Which versions are affected by CVE-2024-58354?


## How do I fix CVE-2024-58354?

No fix has been published for CVE-2024-58354 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-58354 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-58354 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-58354 and fix it if it is affected.

What it is: CVE-2024-58354 is a high-severity code injection vulnerability in calcom cal.diy, published on 23 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-58354 exists.

Affected product: calcom cal.diy. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2024-58354/ (Markdown: https://insights.sbomify.com/CVE-2024-58354/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-58354
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-58354
- OSV: https://osv.dev/vulnerability/CVE-2024-58354

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-58354/
Summaries are generated and may contain mistakes; the official description above is the record.