VDB-306353 · CVE-2025-46655 · Issue 1910

HackMD CodiMD up to 2.5.4 Content-Security-Policy Header improper protection of alternate path ⚔ [Disputed]

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.0	$0-$5k	0.00

Summaryinfo

A vulnerability was found in HackMD CodiMD up to 2.5.4. It has been classified as problematic. This vulnerability affects unknown code of the component Content-Security-Policy Header Handler. The manipulation leads to improper protection of alternate path. This vulnerability is listed as CVE-2025-46655. The attack may be initiated remotely. There is no available exploit. There is ongoing doubt regarding the real existence of this vulnerability.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in HackMD CodiMD up to 2.5.4. This issue affects an unknown code block of the component Content-Security-Policy Header Handler. The manipulation with an unknown input leads to a improper protection of alternate path vulnerability. Using CWE to declare the problem leads to CWE-424. The product does not sufficiently protect all possible paths that a user can take to access restricted functionality or resources. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

CodiMD through 2.5.4 has a CSP-based protection mechanism against XSS through uploaded SVG documents containing JavaScript, but it can be bypassed in certain cases of different-origin file storage, such as AWS S3. NOTE: it can be considered a user error if AWS is employed for hosting untrusted JavaScript content, but the selected architecture within AWS does not have components that are able to insert Content-Security-Policy headers.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2025-46655 since 04/26/2025. The exploitation is known to be difficult. The attack may be initiated remotely. Neither technical details nor an exploit are publicly available.

The real existence of this vulnerability is still doubted at the moment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-12479). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

HackMD

Name

CodiMD

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.0
VulDB Meta Temp Score: 5.0

VulDB Base Score: 5.0
VulDB Temp Score: 5.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 4.9
CNA Vector (MITRE): 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper protection of alternate path
CWE: CWE-424
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

04/26/2025 🔍
04/27/2025 +1 days 🔍
04/27/2025 +0 days 🔍
05/25/2025 +28 days 🔍

Sourcesinfo

Advisory: 1910
Status: Confirmed
Disputed: 🔍

CVE: CVE-2025-46655 (🔍)
GCVE (CVE): GCVE-0-2025-46655
GCVE (VulDB): GCVE-100-306353
EUVD: 🔍

Entryinfo

Created: 04/27/2025 10:03
Updated: 05/25/2025 21:59
Changes: 04/27/2025 10:03 (63), 05/25/2025 21:59 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.