# LangChain (LangSmith) in April 2026: incidents, uptime and changes

> LangChain (LangSmith) in April 2026: 0 incidents on its status page (0 major or critical), 100% free of major or critical incidents (vendor-reported), 4 CVEs. From Rewindex’s archive of LangChain (LangSmith)’s status, pricing and policy pages.

Canonical: https://rewindex.com/company/langchain-langsmith/2026/04
Last updated: 2026-10-26T22:10:00Z

- Incidents posted: 0 (major/critical: 0) · Maintenance: 0
- By vendor impact label: none
- Uptime (vendor-reported): 100% free of major/critical incidents, 100% free of any incident; outage time 0 min, incident time 0 min
- Price changes: 0 · Pricing/legal/trust page changes: 0 · Deprecations: 0 · CVEs: 4
- Previous month: [March 2026](https://rewindex.com/company/langchain-langsmith/2026/03.md) · Next: [May 2026](https://rewindex.com/company/langchain-langsmith/2026/05.md) · [All months](https://rewindex.com/company/langchain-langsmith/reports.md) · [LangChain (LangSmith)](https://rewindex.com/company/langchain-langsmith.md)

_Uptime: Derived from the incidents the vendor posted on its own status page, not measured by us. A minute counts as an outage minute when a major or critical incident (as the vendor labelled it) was open; incident minutes include minor ones too. Maintenance and incidents marked "no impact" are left out, overlapping incidents are merged, a resolved incident counts for at most 7 days, and one still open with no resolution counts for at most 24 hours._

## All incidents

_No incidents posted this month._

## CVEs published

- [CVE-2026-40087](https://rewindex.com/cve/CVE-2026-40087.md) LangChain has incomplete f-string validation in prompt templates (CVSS 5.3), published 2026-04-09
- [CVE-2026-40190](https://rewindex.com/cve/CVE-2026-40190.md) LangSmith Client SDKs has Prototype Pollution in langsmith-sdk via Incomplete \`\_\_proto\_\_\` Guard in Internal lodash \`set()\` (CVSS 5.6), published 2026-04-10
- [CVE-2026-41481](https://rewindex.com/cve/CVE-2026-41481.md) LangChain: HTMLHeaderTextSplitter.split\_text\_from\_url SSRF Redirect Bypass (CVSS 6.5), published 2026-04-24
- [CVE-2026-41488](https://rewindex.com/cve/CVE-2026-41488.md) angchain-openai: Image token counting SSRF protection can be bypassed via DNS rebinding (CVSS 3.1), published 2026-04-24

## Cite this

LangChain (LangSmith) posted 0 status incidents in April 2026 (0 major or critical); 0 price changes and 0 notable page changes observed.

- Canonical URL: https://rewindex.com/company/langchain-langsmith/2026/04
- Citation: LangChain (LangSmith), “LangChain (LangSmith) in April 2026” (2026-04-01 00:00 UTC). Archived by Rewindex: https://rewindex.com/company/langchain-langsmith/2026/04 (CC BY 4.0).
- Markdown link: `[LangChain (LangSmith): LangChain (LangSmith) in April 2026 (2026-04-01)](https://rewindex.com/company/langchain-langsmith/2026/04)`


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Canonical: https://rewindex.com/company/langchain-langsmith/2026/04 · Markdown: https://rewindex.com/company/langchain-langsmith/2026/04.md · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-04T10:34:42.766Z