CVE-2026-71433LangGraph: Namespace prefix matching crosses segment boundaries in Postgres and SQLite stores
- 5.3MediumCVSS base score
- 0.36%Exploitation in 30 daysEPSS · top 69% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By GitHub_M
Published
- 1 day later
· 1 day later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N |
| NVDNVD · Awaiting Analysis | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N |
- EPSS (exploitation in 30 days)
- 0.36% · top 69% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.
Affected products
- affected < 3.1.1
langchain-ai · langgraph-checkpoint-sqlite
- affected < 3.1.1
langchain-ai · langgraph-checkpoint-postgres
- affected < 3.1.1
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- PyPIlanggraph-checkpoint-postgresGHSA-47pj-3jcm-6whg (opens in a new tab)
- PyPIlanggraph-checkpoint-sqliteGHSA-47pj-3jcm-6whg (opens in a new tab)
References
References5
- https://github.com/langchain-ai/langgraph/security/advisories/GHSA-47pj-3jcm-6whg (opens in a new tab)x_refsource_CONFIRM
- https://github.com/langchain-ai/langgraph/pull/8478 (opens in a new tab)x_refsource_MISC
- https://github.com/langchain-ai/langgraph/commit/66ebe1a0da921e73f0f9f879ba105d314c079f7c (opens in a new tab)x_refsource_MISC
- https://github.com/langchain-ai/langgraph/releases/tag/checkpointpostgres%3D%3D3.1.1 (opens in a new tab)x_refsource_MISC
- https://github.com/langchain-ai/langgraph/releases/tag/checkpointsqlite%3D%3D3.1.1 (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-54227 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-47pj-3jcm-6whg (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-71433)Record last updated .