CVE-2026-78061 vas3k TaxHacker Email Sync imap-client.ts buildImapConfig server-side request forgery
Remote attackers can exploit SSRF in TaxHacker's email sync by manipulating IMAP host/port arguments, potentially accessing internal resources.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-78061?
CVE-2026-78061 is a medium-severity server-side request forgery vulnerability in vas3k TaxHacker, published on 23 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was determined in vas3k TaxHacker up to 0.8.2. Impacted is the function buildImapConfig of the file lib/email-sync/imap-client.ts of the component Email Sync. Executing a manipulation of the argument host/port can lead to server-side request forgery. It is possible to launch the attack remotely. The pull request to fix this issue awaits acceptance.
Weakness: CWE-918
Which versions are affected by CVE-2026-78061?
How do I fix CVE-2026-78061?
No fix has been published for CVE-2026-78061 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-78061 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-78061 exists.
Sources
Also known as GHSA-hrrq-qh5p-23c2.