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MitreCVE-2021-35955

HistoryAug 12, 2021 - 3:15 p.m.

CVE-2021-35955

2021-08-1215:15:07

CWE-79

mitre

web.nvd.nist.gov

contao

xss

html attributes

security vulnerability

nvd

cve-2021-35955

CVSS2

3.5

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:S/C:N/I:P/A:N

CVSS3

4.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

AI Score

4.6

Confidence

High

EPSS

0.001

Percentile

22.7%

JSON

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.

Affected configurations

Nvd

Node

contaocontaoRange4.0.0–4.4.56

contaocontaoRange4.5.0–4.9.18

contaocontaoRange4.10.0–4.11.7

VendorProductVersionCPE
contaocontao*cpe:2.3:a:contao:contao:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
contao	contao	*	cpe:2.3:a:contao:contao::::::::

References

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

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

Social References

CVSS2

3.5

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:S/C:N/I:P/A:N

CVSS3

4.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

AI Score

4.6

Confidence

High

EPSS

0.001

Percentile

22.7%

JSON

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