GHSA-65RG-554R-9J5X
Vulnerability from github – Published: 2025-08-28 14:40 – Updated: 2025-08-28 15:59
VLAI
Summary
lychee link checking action affected by arbitrary code injection in composite action
Details
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
Severity
{
"affected": [
{
"package": {
"ecosystem": "GitHub Actions",
"name": "lycheeverse/lychee-action"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.0.2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2024-48908"
],
"database_specific": {
"cwe_ids": [
"CWE-94"
],
"github_reviewed": true,
"github_reviewed_at": "2025-08-28T14:40:08Z",
"nvd_published_at": "2025-08-28T15:15:42Z",
"severity": "MODERATE"
},
"details": "### Summary\n\nThere is a potential attack of arbitrary code injection vulnerability in `lychee-setup` of the composite action at *action.yml*.\n\n### Details\n\nThe GitHub Action variable `inputs.lycheeVersion` can be used to execute arbitrary code in the context of the action.\n\n### PoC\n\n```yaml\n- uses: lycheeverse/lychee@v2\n with:\n lycheeVersion: $(printenv \u003e\u003e $GITHUB_STEP_SUMMARY \u0026\u0026 echo \"v0.16.1\")\n```\n\nThe 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.\n\n### Impact\n\nLow",
"id": "GHSA-65rg-554r-9j5x",
"modified": "2025-08-28T15:59:37Z",
"published": "2025-08-28T14:40:08Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/lycheeverse/lychee-action/security/advisories/GHSA-65rg-554r-9j5x"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-48908"
},
{
"type": "WEB",
"url": "https://github.com/lycheeverse/lychee-action/commit/7cd0af4c74a61395d455af97419279d86aafaede"
},
{
"type": "PACKAGE",
"url": "https://github.com/lycheeverse/lychee-action"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U",
"type": "CVSS_V4"
}
],
"summary": "lychee link checking action affected by arbitrary code injection in composite action"
}
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
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They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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