CVE-2026-48775: LangGraph SQLite Checkpoint is an implementation of LangGraph CheckpointSaver that uses SQLite DB (both sync a

Routine

MEDIUM 6.8UPGRADE

CVE-2026-48775 is a medium-severity flaw (CVSS 6.8) affecting langgraph-checkpoint. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

LangGraph SQLite Checkpoint is an implementation of LangGraph CheckpointSaver that uses SQLite DB (both sync and async, via aiosqlite). In versions 4.1.0 and prior, the JsonPlusSerializer can reconstruct Python objects from JSON checkpoint payloads. Under conditions where someone could modify checkpoint bytes at rest in the backing store, the deserialization path could reconstruct objects beyond what the application expects, which could in turn r

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.8 (Medium)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.2% (top 86%)
CISA exploited list	No
Weakness	CWE-502, CWE-913
Published	2026-06-16
Last modified	2026-06-24

Publisher (CNA): GitHub, Inc. · Vendor: langchain

Last updated 2026-06-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-16 19:16 UTCPublished CVE record published
2026-06-24 18:53 UTCUpdated Record last modified

langchain langgraph-checkpoint UPGRADE

Affected: < 4.1.1

Fixed in: 4.1.1

Safe to downgrade to: no unaffected older release

1. Check installed version

pip show langgraph-checkpoint

2. UPGRADE to 4.1.1

pip install --upgrade "langgraph-checkpoint>=4.1.1"

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-48775?

langgraph-checkpoint: upgrade to 4.1.1. Exact commands for each OS are on this page.

Is CVE-2026-48775 being exploited?

CVE-2026-48775 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-48775 affect?

CVE-2026-48775 affects langgraph-checkpoint. Severity is medium (CVSS 6.8). LangGraph SQLite Checkpoint is an implementation of LangGraph CheckpointSaver that uses SQLite DB (both sync and async, via aiosqlite). In versions 4.1.0 and prior, the JsonPlusSerializer can reconstruct Python objects from JSON checkpoint

How urgent is CVE-2026-48775?

Priority 27/100. No elevated risk signals yet.

Software pages

Python vulnerabilities · SQLite vulnerabilities · OpenAI and LLM tools vulnerabilities · Check Point vulnerabilities

References

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