Low
BerriAI litellm MCP OpenAPI Spec Loader openapi_to_mcp_generator.py load_openapi_spec_async server-side request forgery
Type: advisorySources: OSV
A weakness has been identified in BerriAI litellm up to 1.82.2. Affected by this vulnerability is the function load_openapi_spec_async of the file litellm/proxy/_experimental/mcp_server/openapi_to_mcp_generator.py of the component MCP OpenAPI Spec Loader. This manipulation of the argument spec_path causes server-side request forgery. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-12798
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 2 Nov 2026, 19:45 UTC · Revision 1
Source evidence
BerriAI litellm MCP OpenAPI Spec Loader openapi_to_mcp_generator.py load_openapi_spec_async server-side request forgery
core-osv · Original sourcePublished 21 Jun 2026, 09:30 UTC
A weakness has been identified in BerriAI litellm up to 1.82.2. Affected by this vulnerability is the function load_openapi_spec_async of the file litellm/proxy/_experimental/mcp_server/openapi_to_mcp_generator.py of the component MCP OpenAPI Spec Loader. This manipulation of the argument spec_path causes server-side request forgery. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure.
osv:CVE-2026-12798
Complete source record
{
"id": "08720d9787c72758f9b591ed5e4b5d006a75c3cc320d1de3b042ad805e83e3f2",
"url": "https://osv.dev/vulnerability/CVE-2026-12798",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "BerriAI litellm MCP OpenAPI Spec Loader openapi_to_mcp_generator.py load_openapi_spec_async server-side request forgery",
"summary": "A weakness has been identified in BerriAI litellm up to 1.82.2. Affected by this vulnerability is the function load_openapi_spec_async of the file litellm/proxy/_experimental/mcp_server/openapi_to_mcp_generator.py of the component MCP OpenAPI Spec Loader. This manipulation of the argument spec_path causes server-side request forgery. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure.",
"evidence": "osv:CVE-2026-12798",
"products": [],
"severity": "low",
"structured": {
"id": "CVE-2026-12798",
"aliases": [
"CVE-2026-12798",
"GHSA-c693-x898-5g4h",
"PYSEC-2026-4069"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/berriai/litellm",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"last_affected": "a56541ba2668e370962b2fc3638b5a5f615b5983"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:litellm:litellm:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"last_affected": "1.82.2"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-12798.json"
}
}
],
"modified": "2026-10-28T02:30:23.000923961Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/12xxx/CVE-2026-12798.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-12798",
"https://vuldb.com/cve/CVE-2026-12798",
"https://vuldb.com/submit/811290",
"https://vuldb.com/vuln/372560",
"https://vuldb.com/vuln/372560/cti",
"https://gist.github.com/YLChen-007/c1104c529975699ba347feedfbe02c5a"
],
"provider_metadata": {
"cwe_ids": [
"CWE-918"
],
"cna_assigner": "VulDB",
"unresolved_ranges": [
{
"extracted_events": [
{
"range": [
{
"introduced": "1.82.0"
},
{
"last_affected": "1.82.0"
},
{
"introduced": "1.82.1"
},
{
"last_affected": "1.82.1"
},
{
"introduced": "1.82.2"
},
{
"last_affected": "1.82.2"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandaloneSingleVersion"
}
]
}
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/12xxx/CVE-2026-12798.json"
}
},
"related_cves": [
{
"value": "CVE-2026-12798",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 489345,
"published_at": "2026-06-21T09:30:08.242+00:00"
}