CVE-2026-78061: vas3k TaxHacker Email Sync imap-client.ts buildImapConfig server-side request forgery

Severity: medium (CVSS 6.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-23 · updated 2026-10-12
Weakness: CWE-918

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.

Affected products

vas3k TaxHacker: 0.8.0, 0.8.1, 0.8.2

References

https://github.com/vas3k/TaxHacker/
https://github.com/vas3k/TaxHacker/issues/148
https://github.com/vas3k/TaxHacker/pull/170
https://vuldb.com/cve/CVE-2026-78061
https://vuldb.com/submit/881825
https://vuldb.com/vuln/394301
https://vuldb.com/vuln/394301/cti
https://github.com/vas3k/TaxHacker/issues/148

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