AfterLogic Aurora and WebMail Pro - Information Disclosure (CVE-2021-26292)

CVE-2021-26292 is an Information Disclosure vulnerability affecting AfterLogic Aurora and WebMail Pro. An attacker can exploit this vulnerability in combination with existing default credentials.

CrowdSec has been tracking this vulnerability and its exploits since 2nd of April 2025.

Data from the CrowdSec community indicates that exploitation of CVE-2021-26292 is highly selective and intelligence-driven. Threat actors use advanced reconnaissance and carefully choose their targets, often as part of sophisticated campaigns or advanced persistent threat operations. CrowdSec data also reveals a clear uptick in attacks involving CVE-2021-26292 over the past week. Activity is above the usual baseline, suggesting growing attention from attackers. This may reflect rising awareness, recent exploit releases, or expanded targeting efforts.

Exploitation targets webdev endpoints with the default credentials caldav_public_user@localhost. The attacker can send an HTTP DELETE request to the WebDAV endpoint to obtain the web root path.