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01 Record

CVE-2026-44843

LangChain: Unsafe deserialization of attacker-controlled LangChain objects through overly broad `load()` allowlists

HighPUBLISHEDCNA: GitHub_M
CNA base score8.2 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

02 Description

LangChain: Unsafe deserialization of attacker-controlled LangChain objects through overly broad `load()` allowlists

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.40% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 34.5% of scored records. A rank, not a probability.
NVD base score
8.2 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
NVD analysis status
Analyzed. NVD last modified this record on 2026-07-24.
Red Hat severity
Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-05-26 19:47Z5 MO AGO
Last updated
2026-05-27 14:07Z5 MO AGO
Reserved
2026-05-07
Assigning CNA
GitHub_M
Record state
PUBLISHED
Severity
High (CVSS 8.2)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Weaknesses
  • CWE-502Deserialization of Untrusted DataBase
Data version
5.2
Document digest
fc246c699ba6d2782bce0209de22646d04d2d6c322f8d9bb8cf25ab888e405f2

05 Affected products

VendorProductVersionsPlatforms
langchain-ailangchain< 0.3.85, >= 1.0.0a1, < 1.3.3—

06 References