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: 0.2%, top 87% of all CVEs by exploit prediction. 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%CVSS: 5.3Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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
5.3(medium)
EG Risk
24(Track)
EG Risk 24/100SSVC: Track

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%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
13%
KEV
Not listed

Published

August 6, 2026

Last Modified

August 7, 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 rangeFixed inDependents
langgraph-checkpoint-postgres1.0.0 ... 3.1.0a4 (48 versions)3.1.1—
langgraph-checkpoint-sqlite1.0.0 ... 3.1.0a1 (23 versions)3.1.1—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 26× 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. 2026-08-20 22:56 UTCEPSS rescore
  2. 2026-08-20 14:19 UTCEG score recompute
  3. 2026-08-19 17:04 UTCEPSS rescore
  4. 2026-08-18 09:25 UTCEG score recompute
  5. 2026-08-17 13:47 UTCEPSS rescore
  6. 2026-08-17 07:37 UTCEG score recompute
  7. 2026-08-16 14:56 UTCEPSS rescore
  8. 2026-08-16 14:56 UTCEPSS rescore
  9. 2026-08-16 05:49 UTCEG score recompute
  10. 2026-08-16 02:15 UTCEPSS rescore
  11. 2026-08-15 04:02 UTCEG score recompute
  12. 2026-08-15 01:31 UTCEPSS rescore
  13. 2026-08-14 02:13 UTCEG score recompute
  14. 2026-08-13 22:00 UTCEPSS rescore
  15. 2026-08-13 00:25 UTCEG score recompute
  16. 2026-08-12 13:51 UTCEPSS rescore
  17. 2026-08-11 22:37 UTCEG score recompute
  18. 2026-08-11 00:00 UTCEPSS rescore
  19. 2026-08-09 19:02 UTCEG score recompute
  20. 2026-08-09 13:47 UTCEPSS rescore
  21. 2026-08-08 17:15 UTCEG score recompute
  22. 2026-08-08 16:37 UTCEPSS rescore
  23. 2026-08-07 15:27 UTCEG score recompute
  24. 2026-08-07 14:58 UTCEG score recompute
  25. 2026-08-06 22:38 UTCEG score recompute
Show 1 more
  1. 2026-08-06 19:07 UTCEG score recompute

Related CVEs(same CWE)

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 in the National Vulnerability Database on August 6, 2026, with the most recent update on August 7, 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% probability of exploitation in the next 30 days, which ranks it in the top 86.5% of all scored CVEs.
What is the CVSS score of CVE-2026-71433?
CVE-2026-71433 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-71433?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-71433, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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