CVE Explorer
CVE-2026-44843
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 path
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"langchain","vendor":"langchain-ai","versions":[{"status":"affected","version":"< 0.3.85"},{"status":"affected","version":">= 1.0.0a1, < 1.3.3"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:c685be61e743270e4a3a213d828369e21164c132852a692779a3af96b0bff475 · sha256:fc246c699ba6d278… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"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"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:c685be61e743270e4a3a213d828369e21164c132852a692779a3af96b0bff475 · sha256:fc246c699ba6d278… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-502","description":"CWE-502: Deserialization of Untrusted Data","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:c685be61e743270e4a3a213d828369e21164c132852a692779a3af96b0bff475 · sha256:fc246c699ba6d278… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"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"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:c685be61e743270e4a3a213d828369e21164c132852a692779a3af96b0bff475 · sha256:fc246c699ba6d278… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.