How severe is CVE-2024-48908?

No CVSS score has been assigned to CVE-2024-48908 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by CVE-2024-48908?

CVE-2024-48908 affects the following packages: lycheeverse/lychee-action (GitHub Actions). Ecosystems affected: GitHub Actions.

How do I fix CVE-2024-48908?

Update lycheeverse/lychee-action to 2.0.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2024-48908 is resolved across your whole dependency graph.

How do I detect CVE-2024-48908 in my GitHub Actions dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for lycheeverse/lychee-action, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2024-48908 if there is no patch (or I can't update yet)?

Stop passing untrusted input into the interpreter or shell: call the affected binary with an argument array rather than a composed command string, reject anything outside a strict allowlist of expected values, and run the component under an account that cannot reach beyond the work it legitimately does.

Is CVE-2024-48908 actively exploited in the wild?

No public exploit code has been indexed for CVE-2024-48908 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2024-48908?

CVE-2024-48908 has an EPSS (Exploit Prediction Scoring System) score of 0.4%, placing it in the 31th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2024-48908?

CVE-2024-48908 is classified as Code Injection (CWE-94). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was CVE-2024-48908 published, and has it been updated?

CVE-2024-48908 was published on August 28, 2025 and was last updated on October 28, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

📦 GitHub Actions

Not in CISA KEV

CVE-2024-48908 — lychee-action

Fix: lycheeverse/lychee-action@7cd0af4

CVE-2024-48908 is a Code Injection vulnerability in lycheeverse/lychee-action. A fix is available for lycheeverse/lychee-action — see the affected versions and patch details below.

lychee-action vulnerable to arbitrary code injection in composite action

Also known asGHSA-65rg-554r-9j5x

Published

Aug 28, 2025

Updated

Oct 28, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Nov 9, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

Proof-of-concept exploit code exists

CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
A successful exploit gives an attacker total control of the affected component, not partial access.

Exploitation and automatability from CISA’s SSVC triage for CVE-2024-48908.

EPSS Exploitation Probability

via FIRST.org ↗

0.4%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs31th percentile — riskier than 31% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

Real-World Exposure

1 pkg affected

📦lycheeverse/lychee-action

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects GitHub Actions packages — download data is not available via public APIs for these ecosystems.

Description

Summary

There is a potential attack of arbitrary code injection vulnerability in lychee-setup of the composite action at action.yml.

Details

The GitHub Action variable inputs.lycheeVersion can be used to execute arbitrary code in the context of the action.

PoC

- uses: lycheeverse/lychee@v2
  with:
    lycheeVersion: $(printenv >> $GITHUB_STEP_SUMMARY && echo "v0.16.1")

The previous example will just print all the environment variables to the summary of the workflow, but an attacker could potentially use this vector to compromise the security of the target repository, even passing unnotice because the action will run normally.

Impact

Low

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
📦GitHub Actions	`lycheeverse/lychee-action`	all versions	2.0.2

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for lycheeverse/lychee-action, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update lycheeverse/lychee-action to 2.0.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2024-48908 is resolved across your whole dependency graph.
Workarounds
Stop passing untrusted input into the interpreter or shell: call the affected binary with an argument array rather than a composed command string, reject anything outside a strict allowlist of expected values, and run the component under an account that cannot reach beyond the work it legitimately does.

Frequently Asked Questions

### Summary There is a potential attack of arbitrary code injection vulnerability in `lychee-setup` of the composite action at *action.yml*. ### Details The GitHub Action variable `inputs.lycheeVersion` can be used to execute arbitrary code in the context of the action. ### PoC ```yaml - uses: lycheeverse/lychee@v2 with: lycheeVersion: $(printenv >> $GITHUB_STEP_SUMMARY && echo "v0.16.1") ``` The previous example will just print all the environment variables to the summary of the workflow, but an attacker could potentially use this vector to compromise the security of the target re

O3 Security · Impact-Aware SCA

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