Medium
Malformed MergeOp can crash the BuildKit daemon
Type: advisorySources: OSV
A malicious frontend can submit an LLB definition that causes buildkitd to panic and terminate, interrupting all builds running on that daemon.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-93322
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 7 Nov 2026, 09:52 UTC · Revision 1
Source evidence
Malformed MergeOp can crash the BuildKit daemon
core-osv · Original sourcePublished 5 Oct 2026, 17:53 UTC
A malicious frontend can submit an LLB definition that causes buildkitd to panic and terminate, interrupting all builds running on that daemon.
osv:CVE-2026-93322
Complete source record
{
"id": "2d8321fa27b5387e8d0e4b76db34482d286b4c6eee0c89c74225df26cbeeb55a",
"url": "https://osv.dev/vulnerability/CVE-2026-93322",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Malformed MergeOp can crash the BuildKit daemon",
"summary": "A malicious frontend can submit an LLB definition that causes buildkitd to panic and terminate, interrupting all builds running on that daemon.",
"evidence": "osv:CVE-2026-93322",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2026-93322",
"aliases": [
"CVE-2026-93322",
"GHSA-cv6p-7w7g-xjwq"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/moby/buildkit",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "8c91502cf280bd70a0c50912ce251c46a8881d9f"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"last_affected": "0.33.0"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"range": [
{
"fixed": "8c91502cf280bd70a0c50912ce251c46a8881d9f"
}
],
"source": "REFERENCES_TAG",
"original_tag": "v0.33.1"
}
]
}
}
],
"versions": [
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"v0.33.0",
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"dockerfile/1.27.0",
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"dockerfile/1.10.0-rc1-labs",
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"v0.15.0",
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93322.json"
}
}
],
"modified": "2026-10-28T02:30:50.505581182Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93322.json",
"https://github.com/moby/buildkit/security/advisories/GHSA-cv6p-7w7g-xjwq",
"https://nvd.nist.gov/vuln/detail/CVE-2026-93322",
"https://github.com/moby/buildkit/releases/tag/v0.33.1"
],
"provider_metadata": {
"cwe_ids": [
"CWE-129"
],
"cna_assigner": "Docker",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93322.json"
}
},
"related_cves": [
{
"value": "CVE-2026-93322",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 518927,
"published_at": "2026-10-05T17:53:50.583+00:00"
}