CVE-2025-63914
Cinnamon Kotaemon ZIP Bomb Denial of Service (DoS)
Description
An issue was discovered in Cinnamon kotaemon 0.11.0. The _may_extract_zip function in the \libs\ktem\ktem\index\file\ui.py file does not check the contents of uploaded ZIP files. Although the contents are extracted into a temporary folder that is cleared before each extraction, successfully uploading a ZIP bomb could still cause the server to consume excessive resources during decompression. Moreover, if no further files are uploaded afterward, the extracted data could occupy disk space and potentially render the system unavailable. Anyone with permission to upload files can carry out this attack.
INFO
Published Date :
Nov. 24, 2025, 8:15 p.m.
Last Modified :
Dec. 30, 2025, 5:33 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Validate uploaded ZIP file contents.
- Implement resource limits for decompression.
- Ensure temporary folders are cleared properly.
- Monitor server resource utilization.
Public PoC/Exploit Available at Github
CVE-2025-63914 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-63914.
| URL | Resource |
|---|---|
| https://github.com/Cinnamon/kotaemon | Product |
| https://github.com/WxDou/CVE-2025-63914 | Exploit Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-63914 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-63914
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Public disclosure and patch for CVE-2025-63914: Zip bomb vulnerability in Cinnamon/kotaemon.
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-63914 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-63914 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Dec. 30, 2025
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:cinnamon:kotaemon:0.11.0:*:*:*:*:*:*:* Added Reference Type MITRE: https://github.com/Cinnamon/kotaemon Types: Product Added Reference Type MITRE: https://github.com/WxDou/CVE-2025-63914 Types: Exploit, Third Party Advisory -
New CVE Received by [email protected]
Nov. 24, 2025
Action Type Old Value New Value Added Description An issue was discovered in Cinnamon kotaemon 0.11.0. The _may_extract_zip function in the \libs\ktem\ktem\index\file\ui.py file does not check the contents of uploaded ZIP files. Although the contents are extracted into a temporary folder that is cleared before each extraction, successfully uploading a ZIP bomb could still cause the server to consume excessive resources during decompression. Moreover, if no further files are uploaded afterward, the extracted data could occupy disk space and potentially render the system unavailable. Anyone with permission to upload files can carry out this attack. Added Reference https://github.com/Cinnamon/kotaemon Added Reference https://github.com/WxDou/CVE-2025-63914 -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Nov. 24, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-409