CVE-2026-41481: LangChain is a framework for building agents and LLM-powered applications

Q: How do I fix CVE-2026-41481?

langchain-text-splitters: upgrade to 1.1.2. Exact commands for each OS are on this page.

Q: Is CVE-2026-41481 being exploited?

CVE-2026-41481 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-41481 affect?

CVE-2026-41481 affects langchain-text-splitters. Severity is medium (CVSS 6.5). LangChain is a framework for building agents and LLM-powered applications. Prior to langchain-text-splitters 1.1.2, HTMLHeaderTextSplitter.split_text_from_url() validated the initial URL using validate_safe_url() but then performed the fet

Q: How urgent is CVE-2026-41481?

Priority 27/100. No elevated risk signals yet.

Routine

MEDIUM 6.5UPGRADE

CVE-2026-41481 is a medium-severity flaw (CVSS 6.5) affecting langchain-text-splitters. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

LangChain is a framework for building agents and LLM-powered applications. Prior to langchain-text-splitters 1.1.2, HTMLHeaderTextSplitter.split_text_from_url() validated the initial URL using validate_safe_url() but then performed the fetch with requests.get() with redirects enabled (the default). Because redirect targets were not revalidated, a URL pointing to an attacker-controlled server could redirect to internal, localhost, or cloud metada

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.3% (top 82%)
CISA exploited list	No
Weakness	CWE-918
Published	2026-04-24
Last modified	2026-10-26

Publisher (CNA): GitHub, Inc. · Vendor: langchain

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-24 21:16 UTCPublished CVE record published
2026-10-26 22:10 UTCUpdated Record last modified

langchain langchain-text-splitters UPGRADE

Affected: < 1.1.2

Fixed in: 1.1.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy langchain-text-splitters || rpm -q langchain-text-splitters || langchain-text-splitters --version

2. UPGRADE to 1.1.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade langchain-text-splitters

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade langchain-text-splitters

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-41481?

langchain-text-splitters: upgrade to 1.1.2. Exact commands for each OS are on this page.

Is CVE-2026-41481 being exploited?

CVE-2026-41481 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-41481 affect?

CVE-2026-41481 affects langchain-text-splitters. Severity is medium (CVSS 6.5). LangChain is a framework for building agents and LLM-powered applications. Prior to langchain-text-splitters 1.1.2, HTMLHeaderTextSplitter.split_text_from_url() validated the initial URL using validate_safe_url() but then performed the fet

How urgent is CVE-2026-41481?

Priority 27/100. No elevated risk signals yet.

Software pages

OpenAI and LLM tools vulnerabilities

References

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