CVE-2026-78061: Server-Side Request Forgery in vas3k TaxHacker
Description
CVE-2026-78061 is a server-side request forgery (SSRF) vulnerability in vas3k TaxHacker affecting versions 0.8.0, 0.8.1, and 0.8.2. The flaw exists in the buildImapConfig function of the Email Sync component, where manipulation of the host or port arguments can lead to SSRF. The vulnerability can be exploited remotely. A patch has been developed but is pending acceptance. The product is a cloud service, so vendor-managed remediation is expected.
CVSS v4.0
Score 5.3medium
Affected software
vas3k
TaxHacker
pkg:github/vas3k/TaxHackercpe:2.3:a:vas3k:taxhacker:*:*:*:*:*:*:*:*Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in vas3k TaxHacker up to version 0.8.2 allows remote attackers to perform server-side request forgery via manipulation of the host or port parameters in the buildImapConfig function within the Email Sync component (lib/email-sync/imap-client.ts). The issue enables an attacker to induce the server to make unintended requests. A fix has been created but is awaiting acceptance. The product is cloud-hosted, implying vendor-managed patching.
Potential Impact
Successful exploitation of this SSRF vulnerability could allow an attacker to make arbitrary requests from the server, potentially accessing internal resources or services not otherwise exposed. The CVSS 4.0 base score is 5.3, indicating a medium severity impact with low complexity and no user interaction required. There are no known exploits in the wild at this time.
Mitigation Recommendations
A patch addressing this vulnerability is available but currently awaiting acceptance. Since TaxHacker is a cloud service, the vendor is responsible for applying the fix server-side. Users should monitor vendor advisories for confirmation of patch deployment and apply any updates or mitigations recommended by the vendor once the fix is accepted.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-08-22T10:54:25.793Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Is Cloud Service
- true
Threat ID: 6a8a6e87acd9273b496a8ac3
Added to database: 08/23/2026, 03:52:39 UTC
Last enriched: 09/10/2026, 23:34:02 UTC
Last updated: 10/06/2026, 18:48:25 UTC
Views: 86
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