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vuln-cve/data/2026/44xxx/CVE-2026-44843.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-44843",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-05-07T21:21:48.352Z",
"datePublished": "2026-05-26T19:47:35.328Z",
"dateUpdated": "2026-05-27T14:07:03.564Z"
},
"containers": {
"cna": {
"title": "LangChain: Unsafe deserialization of attacker-controlled LangChain objects through overly broad `load()` allowlists",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-502",
"lang": "en",
"description": "CWE-502: Deserialization of Untrusted Data",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 8.2,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N",
"version": "3.1"
}
}
],
"references": [
{
"name": "https://github.com/langchain-ai/langchain/security/advisories/GHSA-pjwx-r37v-7724",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/langchain-ai/langchain/security/advisories/GHSA-pjwx-r37v-7724"
}
],
"affected": [
{
"vendor": "langchain-ai",
"product": "langchain",
"versions": [
{
"version": "< 0.3.85",
"status": "affected"
},
{
"version": ">= 1.0.0a1, < 1.3.3",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-05-26T19:47:35.328Z"
},
"descriptions": [
{
"lang": "en",
"value": "LangChain is a framework for building agents and LLM-powered applications. Prior to 0.3.85 and 1.3.3, LangChain contains older runtime code paths that deserialize run inputs, run outputs, or other application-controlled payloads using overly broad object allowlists. These paths may call load() with allowed_objects=\"all\". This does not enable arbitrary Python object deserialization, but it does allow any trusted LangChain-serializable object to be revived, which is broader than these runtime paths require. As a result, attacker-supplied LangChain serialized constructor dictionaries may cause trusted runtime paths to instantiate classes with untrusted constructor arguments. This vulnerability is fixed in 0.3.85 and 1.3.3."
}
],
"source": {
"advisory": "GHSA-pjwx-r37v-7724",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-05-27T14:06:50.805026Z",
"id": "CVE-2026-44843",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-05-27T14:07:03.564Z"
}
}
]
}
}