Medium severity6.1OSV Advisory· Published Jan 15, 2026· Updated Jun 17, 2026

CVE-2021-47768

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Thunderbird/Import Export Tools NgOSV2 versions
v10.0.4, v3.3.2, v3.3.3-f1, …+ 1 more
- (no CPE)range: v10.0.4, v3.3.2, v3.3.3-f1, …
- (no CPE)range: <10.0.4
Cleidigh/Importexporttools Ng
cpe:2.3:a:cleidigh:importexporttools_ng:10.0.4:*:*:*:*:thunderbird:*:*
Thundernest/import-export-tools-ngllm-create
Range: <10.0.4

Patches

Vulnerability mechanics

References

www.exploit-db.com/exploits/50496nvdExploit
www.vulnerability-lab.com/get_content.phpnvdThird Party Advisory
addons.thunderbird.net/en-US/thunderbird/addon/importexporttools-ng/nvdProduct

News mentions

No linked articles in our index yet.

Severity

MediumCVSS v3.1

6.1/ 10

CVSS v45.3

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

Attack vector: Network
Complexity: Low
Privileges: None
User interaction: Required
Scope: Changed
Confidentiality: Low
Integrity: Low
Availability: None

Vector

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

Affected

Source repo: github.com/thundernest/import-export-tools-ng

EPSS

Probability of exploitation in the next 30 days.

0.32%

VYPR risk score

Composite of severity, exploitation, and reach.

0.40medium

cvss	0.397
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000

Weaknesses

CWE-79
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVE ID

CVE-2021-47768

Credits

VL
Vulnerability Lab
finder