CVE-2026-112353
GFI KerioConnect (Kerio Connect) before 10.0.8 Patch 2 contains a stored cross-site scripting…
- Risk score
- 54/100
- CVSS
- 8.2 v3.1
- Published
- 27 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- GFI KerioConnect (Kerio Connect) before 10.0.8 Patch 2 contains a stored cross-site scripting vulnerability in the Webmail component that allows a remote attacker to run JavaScript in a victim's authenticated Webmail session by uploading a crafted SVG email attachment that bypasses sanitization of event-handler attrib…
- Affected
- See advisory
- Fix
- Upgrade the product to 10.0.8 or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 8.2 high
- Remotely exploitable without logging in
References
Original description
GFI KerioConnect (Kerio Connect) before 10.0.8 Patch 2 contains a stored cross-site scripting vulnerability in the Webmail component that allows a remote attacker to run JavaScript in a victim's authenticated Webmail session by uploading a crafted SVG email attachment that bypasses sanitization of event-handler attributes. Attackers can exploit the temporary-download endpoint's insufficient Content-Security-Policy sandbox to execute scripts when the attachment is opened, enabling theft of the victim's credentials and mailbox contents. Proofpoint Threat Research has observed exploitation in the wild as a credential and mailbox stealer.
Last activity 27 Oct 2026. Patch Forecast updates every hour.