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CVE-2024-1455

Billion Laughs Attack leading to DoS in langchain-ai/langchain

Published: Mar 26, 2024Updated: Jul 30, 2025 Sources: CVE List NVD GHSACWE-776
5.9MEDIUM
NVD MITRE
EPSS Score
0.8%
Top 47.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

Description

A vulnerability in the langchain-ai/langchain repository allows for a Billion Laughs Attack, a type of XML External Entity (XXE) exploitation. By nesting multiple layers of entities within an XML document, an attacker can cause the XML parser to consume excessive CPU and memory resources, leading to a denial of service (DoS).

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-776

Affected Products

langchain
oss-projectaka langchain core, langchain-experimental
langchainLibrary
AI / ML / ml-framework
langchain-ai
oss-projectaka langgraph, langchain, langchain-ai/langchain
langchain-ai/langchainMixed
AI / ML / ai-agent-tooling
PyPI
package-ecosystem
langchain-core
OSS Libraries

Exploitability

Official Patch Available

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://github.com/langchain-ai/langchain/commit/727d5023ce88e18e3074ef620a98137d26ff92a3
github.com
https://huntr.com/bounties/4353571f-c70d-4bfd-ac08-3a89cecb45b6
huntr.com
https://nvd.nist.gov/vuln/detail/CVE-2024-1455
nvd.nist.gov
and 4 more references View all →

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