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K
cveMitreCVE-2021-26539
HistoryFeb 08, 2021 - 5:15 p.m.

CVE-2021-26539

2021-02-0817:15:13
mitre
web.nvd.nist.gov
105
2
cve-2021-26539
apostrophe technologies
sanitize-html
internationalized domain name
idn
hostname whitelist validation
allowediframehostnames
security vulnerability

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:L/Au:N/C:N/I:P/A:N

CVSS3

5.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

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

AI Score

5

Confidence

High

EPSS

0.001

Percentile

49.3%

Apostrophe Technologies sanitize-html before 2.3.1 does not properly handle internationalized domain name (IDN) which could allow an attacker to bypass hostname whitelist validation set by the “allowedIframeHostnames” option.

Affected configurations

Nvd
Node
apostrophecmssanitize-htmlRange<2.3.1node.js
VendorProductVersionCPE
apostrophecmssanitize-html*cpe:2.3:a:apostrophecms:sanitize-html:*:*:*:*:*:node.js:*:*

Social References

More

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:L/Au:N/C:N/I:P/A:N

CVSS3

5.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

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

AI Score

5

Confidence

High

EPSS

0.001

Percentile

49.3%