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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-7845 Detail

Description

A flaw has been found in chatchat-space Langchain-Chatchat up to 0.3.1.3. This issue affects the function PIL.Image.tobytes of the file libs/chatchat-server/chatchat/webui_pages/dialogue/dialogue.py of the component Vision Chat Paste Image Handler. This manipulation of the argument paste_image.image_data causes use of weak hash. The attacker needs to be present on the local network. The attack is considered to have high complexity. The exploitability is assessed as difficult. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  VulDB
CVSS-BT 1.2 LOW
Vector:  CVSS:4.0/AV:A/AC:H/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/3em0/cve_repo/blob/main/Langchain-Chatchat/Vuln-1-tobytes-Hash-Collision.md VulDB
https://github.com/chatchat-space/Langchain-Chatchat/ VulDB
https://github.com/chatchat-space/Langchain-Chatchat/issues/5462 CISA-ADP, VulDB
https://vuldb.com/submit/807794 VulDB
https://vuldb.com/vuln/361124 VulDB
https://vuldb.com/vuln/361124/cti VulDB

Weakness Enumeration

CWE-ID CWE Name Source
CWE-327 Use of a Broken or Risky Cryptographic Algorithm VulDB  
CWE-328 Use of Weak Hash VulDB  

Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-7845
NVD Published Date:
05/05/2026
NVD Last Modified:
05/05/2026
Source:
VulDB