[renovate]

This PR contains the following updates:

Package	Type	Update	Change	OpenSSF
langgraph (source, changelog)	uv.lock	patch	1.2.11 → 1.2.14

---

LangGraph: Unencoded identifiers in LangGraph SDK v3 streaming can redirect authenticated GET requests

CVE-2026-118667 / GHSA-3fx2-cqw9-xr3c

More information

Details

Summary

The LangGraph Python SDK v3 streaming client interpolates caller-supplied thread_id and assistant_id values into request paths without encoding them at four synchronous and asynchronous call sites. Relative path segments can therefore redirect an authenticated GET request to another path on the same configured server.

Details

The affected get_tree and _fetch_state implementations build request paths from raw identifiers rather than passing each identifier through the SDK's existing _quote_path_param helper. HTTP path normalization can collapse values containing relative segments before dispatch while retaining the client's authentication headers.

langgraph-sdk versions 0.4.0 through 0.4.5 are affected. The v3 stream module is not present in the 0.3.x release line.

RemoteGraph v3 streaming in langgraph 1.2.3 and later is also affected when used with a vulnerable langgraph-sdk version. It passes config["configurable"]["thread_id"] into threads.stream(...), and its dependency range permits affected SDK versions.

Impact

An application is affected only if it passes attacker-controlled text as a streaming thread_id or assistant_id. In that configuration, an attacker may select another readable path on the configured server and cause the SDK to return that response to the application. Through thread_id, the attacker can also control the query string, for example by targeting /store/items?namespace=...&key=...; assistant_id controls only the path. The affected requests are GET operations, so this issue does not provide a write primitive.

The LangGraph Platform is not exposed to this issue.

Remediation

Upgrade langgraph-sdk to version 0.4.6 or later. The fix encodes assistant_id in get_tree and thread_id in _fetch_state with _quote_path_param in both synchronous and asynchronous stream modules.

If you use RemoteGraph, also upgrade langgraph to version 1.2.14 or later, which requires langgraph-sdk>=0.4.6.

Severity

• CVSS Score: 4.3 / 10 (Medium)
• Vector String: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

References

• https://github.com/langchain-ai/langgraph/security/advisories/GHSA-3fx2-cqw9-xr3c
• https://github.com/langchain-ai/langgraph/pull/9213
• https://github.com/langchain-ai/langgraph/commit/d89c7e100ec6fc1512544d23b0a7c5169699ef3e
• https://github.com/langchain-ai/langgraph/releases/tag/1.2.14
• https://github.com/langchain-ai/langgraph/releases/tag/sdk%3D%3D0.4.6
• https://github.com/advisories/GHSA-3fx2-cqw9-xr3c

This data is provided by the GitHub Advisory Database (CC-BY 4.0).

---

Release Notes

langchain-ai/langgraph (langgraph)

v1.2.14: langgraph==1.2.14

Compare Source

Changes since 1.2.13

• release(langgraph): 1.2.14 (#​9215)

v1.2.13: langgraph==1.2.13

Compare Source

Changes since 1.2.12

• fix(langgraph): fork before replaying an update checkpoint the thread moved past (#​9170)
• fix(langgraph): keep an update_state on an older checkpoint out of its other branches (#​9165)
• fix(langgraph): keep DeltaChannel counters on every update_state path (#​9142)
• release(langgraph): 1.2.13 (#​9205)
• fix(langgraph): don't walk history for a DeltaChannel that was never written (#​9141)
• fix(langgraph): don't replay an abandoned branch into a DeltaChannel fork (#​8548)
• chore(deps): bump notebook from 7.5.6 to 7.5.7 in /libs/langgraph (#​9168)
• fix(langgraph): hydrate subgraph delta channels with the caller-resolved saver (#​8538)
• fix(langgraph): stop reporting answered interrupts in get_state (#​9103)
• chore(deps-dev): bump the minor-and-patch group across 1 directory with 5 updates (#​9155)
• chore(deps-dev): bump the minor-and-patch group in /libs/checkpoint-conformance with 2 updates (#​9145)
• chore(deps): bump the minor-and-patch group in /libs/sdk-py with 5 updates (#​9149)
• chore(deps): bump tornado from 6.5.8 to 6.5.9 in /libs/langgraph (#​9160)
• chore(deps-dev): bump types-requests from 2.33.0.20260712 to 2.33.0.20260906 in /libs/langgraph (#​9156)
• chore(deps): bump pyjwt from 2.15.0 to 2.15.1 in /libs/langgraph (#​9140)
• chore(deps): bump urllib3 from 2.7.0 to 2.8.0 in /libs/langgraph (#​9138)
• chore(deps): bump pyjwt from 2.14.0 to 2.15.0 in /libs/langgraph (#​9139)
• chore(deps): bump pyjwt from 2.13.0 to 2.14.0 in /libs/langgraph (#​9126)

v1.2.12: langgraph==1.2.12

Compare Source

Changes since 1.2.11

• release(langgraph): 1.2.12 (#​8987)
• chore(deps): bump soupsieve from 2.8.4 to 2.9 in /libs/langgraph (#​8958)
• feat(langgraph): add response_schema to interrupt() (#​8886)
• fix(langgraph): type undeclared v3 stream projections (#​8596)
• chore(langgraph): bump mistune to 3.3.4 (#​8804)
• chore(deps): bump the minor-and-patch group across 1 directory with 7 updates (#​8779)
• chore(deps): bump the minor-and-patch group across 1 directory with 4 updates (#​8782)
• chore(deps): bump tornado from 6.5.7 to 6.5.8 in /libs/langgraph (#​8792)
• chore(deps): bump the major group in /libs/langgraph with 2 updates (#​8783)
• fix(langgraph): detect subgraphs from bytecode instead of source (#​8569)

---

Configuration

📅 Schedule: (in timezone Europe/Berlin)

• Branch creation
  • At any time (no schedule defined)
• Automerge
  • At any time (no schedule defined)

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.