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CVE-2026-59152

LangSmith Client SDKs provide SDK's for interacting with the LangSmith platform. Prior to 0.8.18, an attacker who can send an HTTP request to a server running the LangSmith SDK's TracingMiddleware can cause that server to read an arbitrary file from its local filesystem and upload the contents to LangSmith as a trace attachment. Depending on how the distributed trace system is deployed, triggering a read may not require authentication. Retrieving the contents requires read access to the LangSmit
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:7001a3772ed7d6177383b1ff0cf25a4a7489ebb746f5b66066ea2ead30d98ec3
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 3 assertions

{"cweId":"CWE-22","description":"CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:efb6b09c0708ea0d405468386d104b5915b343d631cd023fdeac1f890f72cc1f · sha256:da49e1058187768f… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-843","description":"CWE-843: Access of Resource Using Incompatible Type ('Type Confusion')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:efb6b09c0708ea0d405468386d104b5915b343d631cd023fdeac1f890f72cc1f · sha256:da49e1058187768f… · /containers/cna/problemTypes/2/descriptions/0

{"cweId":"CWE-346","description":"CWE-346: Origin Validation Error","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:efb6b09c0708ea0d405468386d104b5915b343d631cd023fdeac1f890f72cc1f · sha256:da49e1058187768f… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"langsmith-sdk","vendor":"langchain-ai","versions":[{"status":"affected","version":"< 0.8.18"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:efb6b09c0708ea0d405468386d104b5915b343d631cd023fdeac1f890f72cc1f · sha256:da49e1058187768f… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:efb6b09c0708ea0d405468386d104b5915b343d631cd023fdeac1f890f72cc1f · sha256:da49e1058187768f… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

3 source assertions
{"cweId":"CWE-22","description":"CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:efb6b09c0708ea0d405468386d104b5915b343d631cd023fdeac1f890f72cc1f · sha256:da49e1058187768f… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-843","description":"CWE-843: Access of Resource Using Incompatible Type ('Type Confusion')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:efb6b09c0708ea0d405468386d104b5915b343d631cd023fdeac1f890f72cc1f · sha256:da49e1058187768f… · /containers/cna/problemTypes/2/descriptions/0
{"cweId":"CWE-346","description":"CWE-346: Origin Validation Error","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:efb6b09c0708ea0d405468386d104b5915b343d631cd023fdeac1f890f72cc1f · sha256:da49e1058187768f… · /containers/cna/problemTypes/1/descriptions/0

Source references

1 source assertion
{"name":"https://github.com/langchain-ai/langsmith-sdk/security/advisories/GHSA-f4xh-w4cj-qxq8","tags":["x_refsource_CONFIRM"],"url":"https://github.com/langchain-ai/langsmith-sdk/security/advisories/GHSA-f4xh-w4cj-qxq8"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:efb6b09c0708ea0d405468386d104b5915b343d631cd023fdeac1f890f72cc1f · sha256:da49e1058187768f… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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