Vulnerabilities
Misconfiguration
Runtime Security
Compliance
CVE Vulnerabilities

CVE-2021-26540

Published: Feb 08, 2021 | Modified: Apr 01, 2021
CVSS 3.x
5.3
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:N/I:P/A:N
RedHat/V2
RedHat/V3
Ubuntu
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2021-26540
CWEhttps://cwe.mitre.org/data/definitions/.html

Apostrophe Technologies sanitize-html before 2.3.2 does not properly validate the hostnames set by the allowedIframeHostnames option when the allowIframeRelativeUrls is set to true, which allows attackers to bypass hostname whitelist for iframe element, related using an src value that starts with /example.com.

Affected Software

Name Vendor Start Version End Version
Sanitize-html Apostrophecms * 2.3.2 (excluding)

References

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