CVE-2025-63914

MEDIUM 1 PoC
MEDIUM Priority: 0.02 BB Relevance: 73/100
Published: 2025-11-24 Modified: 2026-11-05 First seen: 2026-11-05 Status: active

Attack Surface

Network Low Complexity No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: None
S: Unchanged
C: None
I: None
A: High

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.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
cinnamon kotaemon 0.11.0

References & Advisories (2)

https://github.com/WxDou/CVE-2025-63914
Exploit Third Party Advisory

Proof of Concept (1)

Bug Bounty Relevance

73 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction
✓ PoC available (1)

CVSS Score

6.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

0.38%
Raw Score 0.003830
Percentile 32.9%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00383
2026-11-13
0.00383
2026-11-12
0.00383
2026-11-10
0.00383
2026-11-09
0.00383
2026-11-08
0.00383
2026-11-07
0.00383
2026-11-06
0.00383
2026-11-05
0.00383
2026-11-04
0.00383

Intelligence Sources

nvd ref →