CVE-2021-35955

Published: Aug 12, 2021Updated: Nov 21, 2024 Sources: CVE List NVD GHSACWE-79

NVD MITRE

4.8CVSSMEDIUM

EPSS Score

Description

Contao >=4.0.0 allows backend XSS via HTML attributes to an HTML field. Fixed in 4.4.56, 4.9.18, 4.11.7.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:HPrivileges Required

High

UI:RUser Interaction

Required

Scope

S:CScope

Changed

Impact

C:LConfidentiality

Low

I:LIntegrity

Low

A:NAvailability

None

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Weaknesses

CWE-79

Affected Products

contao contao

On-prem

Web & CMS Plugins / cms-core

contao/core-bundle Packagist OSS Libraries

contao/contao Packagist OSS Libraries

n/a n/a

contaooss-projectDEWeb & CMS Pluginsaka contao cms

packagistpackage-ecosystemOSS Libraries

Attack Graph

Products CVE Techniques Tactics

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Exploitability

2 exploit sources identified

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Official Patch Available

MITRE ATT&CK

2 techniques

Execution

Initial Access

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References

https://contao.org/en/news/contao-4-9-16-and-4-11-5-are-available.html

contao.org

https://github.com/contao/contao/security/advisories/GHSA-hr3h-x6gq-rqcp

github.com

https://nvd.nist.gov/vuln/detail/CVE-2021-35955

nvd.nist.gov

and 4 more references View all →

Timeline

Published

Aug 12, 2021

Last Updated

Nov 21, 2024

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