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Fencer Intel
medium 6.0

CVE-2026-115883 json

LangGraph: Namespace labels containing `.` reach other namespaces in Postgres and SQLite stores

published 17d ago modified 14d ago also EUVD-2026-109182 , GHSA-6hmw-9432-67qq

cvss
6.0
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 22%
public exploits
0
none known

Summary

LangGraph checkpoint savers provide Postgres- and SQLite-backed state persistence for LangGraph workflows and agents. Prior to langgraph-checkpoint-postgres 3.1.3 and langgraph-checkpoint-sqlite 3.1.2, PostgresStore, AsyncPostgresStore, SqliteStore, and AsyncSqliteStore flatten namespace labels with ".".join(namespace), while BaseStore validates labels only for put and aput. Unvalidated dotted labels passed through get, search, delete, list_namespaces, their asynchronous equivalents, or direct batch and abatch operations can resolve to another tenant's stored namespace, allowing cross-namespace reads, overwrites, or deletion. InMemoryStore is not affected because it compares namespace tuples. This issue is fixed in langgraph-checkpoint-postgres 3.1.3 and langgraph-checkpoint-sqlite 3.1.2.

Patch / fix

  • pypi langgraph-checkpoint-postgres 3.1.3
  • pypi langgraph-checkpoint-sqlite 3.1.2
  • langchain-ai langgraph 1.2.15
  • langchain langgraph 1.2.15
  • langchain-ai langgraph-checkpoint-postgres 3.1.3
  • langchain langgraph-checkpoint-postgres 3.1.3
  • langchain-ai langgraph-checkpoint-sqlite 3.1.2
  • langchain langgraph-checkpoint-sqlite 3.1.2

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CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
14d ago

Exploit prediction

0.30% chance of exploitation in the next 30 days, higher than 22% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 4.0 6.0 CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
CNA 4.0 6.0 CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected packages

ecosystem package affected fixed in
pypi langgraph-checkpoint-postgres
<3.1.3
3.1.3
pypi langgraph-checkpoint-sqlite
<3.1.2
3.1.2

Affected products

  • langchain-ai langgraph
  • langchain-ai langgraph-checkpoint-postgres
  • langchain-ai langgraph-checkpoint-sqlite

Classification

Weakness
  • CWE-20 Improper Input Validation
  • CWE-863 Incorrect Authorization

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.