SockJS up to 2.x htmlfile.js c Reflected cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in SockJS up to 2.x. Impacted is an unknown function in the library lib/transport/htmlfile.js. Executing a manipulation of the argument c as part of Parameter can lead to cross site scripting (Reflected). This vulnerability is handled as CVE-2020-8823. The attack can be executed remotely. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in SockJS up to 2.x and classified as problematic. This vulnerability affects an unknown functionality in the library lib/transport/htmlfile.js. The manipulation of the argument c as part of a Parameter leads to a cross site scripting vulnerability (Reflected). The CWE definition for the vulnerability is 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. As an impact it is known to affect integrity. CVE summarizes:

htmlfile in lib/transport/htmlfile.js in SockJS before 3.0 is vulnerable to Reflected XSS via the /htmlfile c (aka callback) parameter.

The weakness was released 02/10/2020. This vulnerability was named CVE-2020-8823 since 02/10/2020. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.007.

Upgrading to version 3.0 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Name: Reflected
Class: Cross site scripting / Reflected
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: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: SockJS 3.0

Timelineinfo

02/10/2020 🔍
02/10/2020 +0 days 🔍
02/10/2020 +0 days 🔍
05/12/2025 +1918 days 🔍

Sourcesinfo

Advisory: github.com
Status: Confirmed

CVE: CVE-2020-8823 (🔍)
GCVE (CVE): GCVE-0-2020-8823
GCVE (VulDB): GCVE-100-149836

Entryinfo

Created: 02/10/2020 17:35
Updated: 05/12/2025 06:45
Changes: 02/10/2020 17:35 (39), 02/10/2020 17:40 (17), 03/29/2024 09:38 (18), 05/12/2025 06:45 (5)
Complete: 🔍
Cache ID: 216::103

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