Description (CNA)
Cypht webmail 2.0.0 through 2.12.2 contains a DOM-based cross-site scripting vulnerability that allows remote attackers to execute arbitrary JavaScript by crafting malicious alt text or URL values in an HTML email's external image tag when ALLOW_EXTERNAL_IMAGE_SOURCES is enabled. Attackers can send a specially crafted email so that when the victim opens it, the externalResources.js code builds the blocked-image notice using innerHTML with decoded email-derived values, triggering script execution in the victim's authenticated session to read mailboxes, send email, or change settings.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| cypht-org / cypht | affected 2.0.0 before 2.13.0 |
CWE
CWE-79
References
- https://github.com/cypht-org/cypht/pull/2118/changes/75d2fb83d228be2aaa37036a11eea68d82122d85
- https://github.com/cypht-org/cypht/releases#release-v2.13.0
- https://www.vulncheck.com/advisories/cypht-through-stored-dom-xss-via-externalresources-js
ADP enrichment
No English description supplied.
No references supplied.