CVE-2026-71433

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (27th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 5.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

LangGraph Checkpoint Postgres and SQLite Checkpoint are the Postgres and SQLite implementations of LangGraph's checkpoint saver. Prior to 3.1.1, the langgraph-checkpoint-postgres and langgraph-checkpoint-sqlite packages persisted hierarchical namespaces as a dot joined string and scoped reads by matching that string as a simple prefix pattern, so a read scoped to one namespace could also match a sibling namespace whose flattened form shares the same leading characters, or a namespace label containing unescaped pattern metacharacters, allowing an authenticated caller to retrieve stored items belonging to another tenant or user through an ordinary scoped search or list namespaces call, with no crafted input required. This issue is fixed in versions 3.1.1 of langgraph-checkpoint-postgres and langgraph-checkpoint-sqlite.

CVSS v3
5.3
EG Score
5.3MEDIUMmedium confidence
EG Risk
24
EG Risk 24/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity53% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.4%
EPSS %ILE
27th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 6, 2026

Last Modified

September 10, 2026

Advisory Details (5)

Auto-updated Aug 6, 2026
Patch available. Sources: github_commit, github_pr, github_release, github.
github Patch Available

Namespace prefix matching crosses segment boundaries in Postgres and SQLite stores · Advisory · langchain-ai/langgraph · GitHub

https://github.com/langchain-ai/langgraph/security/advisories/GHSA-47pj-3jcm-6whg
github_release Patch Available

langgraph-checkpoint-sqlite==3.1.1

Patch available: langchain-ai/langgraph checkpointsqlite==3.1.1

https://github.com/langchain-ai/langgraph/releases/tag/checkpointsqlite%3D%3D3.1.1
github_release Patch Available

langgraph-checkpoint-postgres==3.1.1

Patch available: langchain-ai/langgraph checkpointpostgres==3.1.1

https://github.com/langchain-ai/langgraph/releases/tag/checkpointpostgres%3D%3D3.1.1
github_pr Patch Available

fix(checkpoint-postgres,checkpoint-sqlite): scope namespace matching to segment boundaries

Patch available: langchain-ai/langgraph checkpointpostgres==3.1.1 (PR #8478 merged 2026-07-30)

https://github.com/langchain-ai/langgraph/pull/8478
github_commit Patch Available

commit 66ebe1a0da92 (langchain-ai/langgraph)

Patch available: langchain-ai/langgraph checkpointpostgres==3.1.1 (contains commit 66ebe1a0da92)

https://github.com/langchain-ai/langgraph/commit/66ebe1a0da921e73f0f9f879ba105d314c079f7c

Vendor Advisories for CVE-2026-71433(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(2 across 1 ecosystem)
PyPI(2)
PackageVulnerable rangeFix by version rangeDependents
langgraph-checkpoint-postgres1.0.0 ... 3.1.0a4 (48 versions)
  • every version up to 3.1.1: fixed in 3.1.1
—
langgraph-checkpoint-sqlite1.0.0 ... 3.1.0a1 (23 versions)
  • every version up to 3.1.1: fixed in 3.1.1
—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 9× in last 7d / 41× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-10-05 08:24 UTCEG score recompute
  2. 2026-10-04 23:22 UTCEPSS rescore
  3. 2026-10-04 05:48 UTCEG score recompute
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  1. 2026-09-16 11:12 UTCEG score recompute
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  22. 2026-09-02 00:48 UTCEG score recompute
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  30. 2026-08-28 21:42 UTCEPSS rescore
  31. 2026-08-28 03:27 UTCEG score recompute
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  33. 2026-08-26 14:47 UTCEPSS rescore
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  35. 2026-08-25 13:49 UTCEPSS rescore
  36. 2026-08-24 21:38 UTCEG score recompute
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  40. 2026-08-21 23:49 UTCEPSS rescore
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  45. 2026-08-18 09:25 UTCEG score recompute
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  60. 2026-08-09 19:02 UTCEG score recompute
  61. 2026-08-09 13:47 UTCEPSS rescore
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  66. 2026-08-06 22:38 UTCEG score recompute
  67. 2026-08-06 19:07 UTCEG score recompute

Related CVEs(same product + same CWE)

Same product

3 shown

PyPI:langgraph-checkpoint-sqlite

Frequently asked(5)

What is CVE-2026-71433?
CVE-2026-71433 is a medium vulnerability published on August 6, 2026. LangGraph Checkpoint Postgres and SQLite Checkpoint are the Postgres and SQLite implementations of LangGraph's checkpoint saver. Prior to 3.1.1, the langgraph-checkpoint-postgres and langgraph-checkpoint-sqlite packages persisted hierarchical namespaces as a dot joined string and scoped reads by…
When was CVE-2026-71433 disclosed?
CVE-2026-71433 was first published on August 6, 2026, with the most recent update on September 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-71433 actively exploited?
CVE-2026-71433 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (27th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-71433?
CVE-2026-71433 has a CVSS base score of 5.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-71433?
A fix for CVE-2026-71433 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-71433 are linked in the Vendor Advisories panel on this page.

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