CVE-2021-47768

Name: CVE-2021-47768
Creator: NVD / NIST
Published: 2026-01-15T16:16:08.34+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.32%

Last modified Jun 17, 2026

CVE-2021-47768 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. ImportExportTools NG 10.0.4 contains a persistent HTML injection vulnerability in the email export module that allows remote attackers to inject malicious HTML payloads. Attackers can send emails with crafted HTML in the subject that execute during HTML export, potentially compromising user data or session credentials.. EPSS estimates a 0.32% chance of exploitation in the next 30 days.

Description

ImportExportTools NG 10.0.4 contains a persistent HTML injection vulnerability in the email export module that allows remote attackers to inject malicious HTML payloads. Attackers can send emails with crafted HTML in the subject that execute during HTML export, potentially compromising user data or session credentials.

Metrics

CVSS 3.1

6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS 4.0

5.3/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.32%

23.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Cleidigh	Importexporttools Ng	10.0.4

References

https://addons.thunderbird.net/en-US/thunderbird/addon/importexporttools-ng/Product
https://github.com/thundernest/import-export-tools-ngProduct
https://www.exploit-db.com/exploits/50496Exploit
https://www.vulnerability-lab.com/get_content.php?id=2308Third Party Advisory
https://www.exploit-db.com/exploits/50496Exploit
https://www.vulnerability-lab.com/get_content.php?id=2308Third Party Advisory

Timeline

Published: Jan 15, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2021-47768?

How severe is CVE-2021-47768?

CVE-2021-47768 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.32% probability of exploitation in the next 30 days.

How do I fix CVE-2021-47768?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-47768?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST