VDB-190595 · CVE-2021-4170 · GCVE-0-2021-4170

Calibre-Web Web Page Generation cross site scripting

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.
5.4	$0-$5k	0.00

Summaryinfo

A vulnerability classified as problematic has been found in Calibre-Web. This impacts an unknown function of the component Web Page Generation Handler. The manipulation leads to cross site scripting. This vulnerability is referenced as CVE-2021-4170. Remote exploitation of the attack is possible. No exploit is available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Calibre-Web (version now known). This issue affects some unknown processing of the component Web Page Generation Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity.

The weakness was published 01/17/2022. It is possible to read the advisory at huntr.dev. The identification of this vulnerability is CVE-2021-4170 since 12/25/2021. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

Applying the patch 7ad419dc8c12180e842a82118f4866ac3d074bc5 is able to eliminate this problem. The bugfix is ready for download at github.com.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

Calibre-Web

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.4
NVD Vector: 🔍

CNA Base Score: 7.3
CNA Vector (huntr.dev): 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
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: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 7ad419dc8c12180e842a82118f4866ac3d074bc5

Timelineinfo

12/25/2021 🔍
01/17/2022 +23 days 🔍
01/17/2022 +0 days 🔍
05/02/2025 +1201 days 🔍

Sourcesinfo

Advisory: 7ad419dc8c12180e842a82118f4866ac3d074bc5
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-4170 (🔍)
GCVE (CVE): GCVE-0-2021-4170
GCVE (VulDB): GCVE-100-190595

Entryinfo

Created: 01/17/2022 07:22
Updated: 05/02/2025 02:10
Changes: 01/17/2022 07:22 (48), 01/19/2022 16:27 (3), 01/19/2022 16:34 (1), 11/19/2024 16:01 (32), 05/02/2025 02:10 (3)
Complete: 🔍
Cache ID: 216::103