CVE-2021-26540

Summary

CVECVE-2021-26540
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-02-08 17:15:00 UTC
Updated2021-04-01 15:02:00 UTC
DescriptionApostrophe 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".

Risk And Classification

Problem Types: NVD-CWE-noinfo

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Apostrophecms Sanitize-html All All All All
Application Apostrophecms Sanitize-html All All All All

References

ReferenceSourceLinkTags
new and interesting iframe validation exploits by boutell · Pull Request #460 · apostrophecms/sanitize-html · GitHub MISC github.com Patch, Third Party Advisory
sanitize-html/CHANGELOG.md at main · apostrophecms/sanitize-html · GitHub MISC github.com Release Notes, Third Party Advisory
advisory.checkmarx.net/advisory/CX-2021-4309 MISC advisory.checkmarx.net
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 982673 Nodejs (npm) Security Update for sanitize-html (GHSA-mjxr-4v3x-q3m4)
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