MediumVulnerability

CVE-2025-21604: LangChain4j-AIDeepin file upload conflicts from MD5 file hashing

Source: NVD(opens in a new tab)
Identifier: CVE-2025-21604
Published: January 6, 2025
Record updated: October 9, 2026

Known exploitation: Not listed in the CISA Known Exploited Vulnerabilities catalog at the last check.
EPSS: 0.3%

Summary

CVE-2025-21604 affects LangChain4j-AIDeepin, a retrieval augmented generation (RAG) project, in versions prior to 3.5.0. The project hashes uploaded files with MD5, a weak hash under CWE-328, which may cause file upload conflicts. GitHub, Inc. is the CNA, rating it CVSS 4.0 6.9 MEDIUM.

Mitigation

Fixed in 3.5.0.

Details

Scores and exploitation

EPSS: 0.3%Estimated probability that this CVE is exploited in the next 30 days, from the FIRST Exploit Prediction Scoring System. Read on November 4, 2026.

Weaknesses and techniques

Weakness (CWE): CWE-328
Attack pattern (CAPEC): CAPEC-20

Classification

Attack type: Other
Attack sophistication: Moderate
AI component targeted: RAG
Impact: Integrity
Labels: security

How this record was produced

Summaries, mitigations and labels on this page are generated automatically from the source. The linked source is authoritative. The source gives this advisory a description and no title, so the title above is a headline generated from the source text.

Original source: https://nvd.nist.gov/vuln/detail/CVE-2025-21604

First tracked: February 15, 2026 at 08:35 PM ET, from NVD/CVE Database

Classifier: claude-haiku-5-5, prompt v4

Classifier confidence: 85% (self-assessed)

Topics

Retrieval-augmented generation

Summary

Mitigation

Topics

Related items