LangChain is a framework for building LLM-powered applications. Prior to @langchain/core versions 0.3.80 and 1.1.8, and prior to langchain versions 0.3.37 and 1.2.3, a serialization injection vulnerability exists in LangChain JS's toJSON() …
Exact source revision recorded 5 Nov 2026 03:00:45 UTC. It does not establish the source's current position. Latest evidence.
euvd · EUVD-2025-204846
PublishedLangChain is a framework for building LLM-powered applications. Prior to @langchain/core versions 0.3.80 and 1.1.8, and prior to langchain versions 0.3.37 and 1.2.3, a serialization injection vulnerability exists in LangChain JS's toJSON() method (and subsequently when string-ifying objects using JSON.stringify(). The method did not escape objects with 'lc' keys when serializing free-form data in kwargs. The 'lc' key is used internally by LangChain to mark serialized objects. When user-controlled data contains this key structure, it is treated as a legitimate LangChain object during deserialization rather than plain user data. This issue has been patched in @langchain/core versions 0.3.80 and 1.1.8, and langchain versions 0.3.37 and 1.2.3
EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.
Original publisher date fields
datePublished: Dec 23, 2025, 10:56:04 PM
dateUpdated: Dec 24, 2025, 2:38:40 PM
2 related source bulletins · separate from aliases
WID-SEC-W-2025-2936: LangChain: Mehrere Schwachstellen ermöglichen Offenlegung von Informationen
CVE-2025-68664 · CVE-2025-68665
RHSA-2026:3713: Red Hat Security Advisory: RHOAI 3.3 - Red Hat OpenShift AI
CVE-2024-25621 · CVE-2025-6242 · CVE-2025-12638 · CVE-2025-12816 · CVE-2025-14180 · CVE-2025-14920 · CVE-2025-14921 · CVE-2025-14922 · CVE-2025-14924 · CVE-2025-14925 · CVE-2025-14926 · CVE-2025-14927 · CVE-2025-14928 · CVE-2025-14929 · CVE-2025-14930 · CVE-2025-15284 · CVE-2025-48956 · CVE-2025-52881 · CVE-2025-59425 · CVE-2025-61726 · CVE-2025-61729 · CVE-2025-62164 · CVE-2025-62593 · CVE-2025-64756 · CVE-2025-66031 · CVE-2025-66034 · CVE-2025-66416 · CVE-2025-66418 · CVE-2025-66448 · CVE-2025-66471 · CVE-2025-66506 · CVE-2025-66626 · CVE-2025-67725 · CVE-2025-67726 · CVE-2025-68156 · CVE-2025-68476 · CVE-2025-68665 · CVE-2025-69223 · CVE-2025-69872 · CVE-2026-0897 · CVE-2026-1260 · CVE-2026-21441 · CVE-2026-22778 · CVE-2026-22807 · CVE-2026-24049 · CVE-2026-24486
- Source published
- Dec 23, 2025, 10:56:04 PM (timezone not stated)
- Source modified
- Dec 24, 2025, 2:38:40 PM (timezone not stated)
- Observed here
- 5 Nov 2026 03:00:45 UTC
- Source terms
- ENISA EUVD · source terms and attribution apply
Original source record · Cite this exact observation · Complete original publisher JSON
This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: euvd · ENISA EUVD · source terms and attribution apply. Source text is retained; field grouping and change labels are provided by ChangeIntel.
EUVD CVSS 3.1 · 8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N