vas3k TaxHacker up to 0.8.2 Email Sync imap-client.ts buildImapConfig host/port server-side request forgery

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.1$0-$5k2.64-

Summaryinfo

A vulnerability was found in vas3k TaxHacker up to 0.8.2. It has been classified as critical. The affected element is the function buildImapConfig of the file lib/email-sync/imap-client.ts of the component Email Sync. The manipulation of the argument host/port leads to server-side request forgery. This vulnerability is documented as CVE-2026-78061. The attack can be initiated remotely. There is not any exploit available. The pull request to fix this issue awaits acceptance.

Detailsinfo

A vulnerability, which was classified as critical, has been found in vas3k TaxHacker up to 0.8.2. This issue affects the function buildImapConfig of the file lib/email-sync/imap-client.ts of the component Email Sync. The manipulation of the argument host/port with an unknown input leads to a server-side request forgery vulnerability. Using CWE to declare the problem leads to CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. Impacted is confidentiality, integrity, and availability.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-78061. The exploitation is known to be easy. The attack may be initiated remotely. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/22/2026).

The pull request to fix this issue awaits acceptance.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.1

VulDB Base Score: 6.3
VulDB Temp Score: 6.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Server-side request forgery
CWE: CWE-918
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

08/22/2026 Advisory disclosed
08/22/2026 +0 days VulDB entry created
08/22/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 148
Status: Not defined
Confirmation: 🔒

CVE: CVE-2026-78061 (🔒)
GCVE (CVE): GCVE-0-2026-78061
GCVE (VulDB): GCVE-100-394301

Entryinfo

Created: 08/22/2026 13:00
Changes: 08/22/2026 13:00 (57)
Complete: 🔍
Submitter: keyblue
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #881825: vas3k TaxHacker main Server-Side Request Forgery (by keyblue)

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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