CVE-2021-42940
CVSS v3
9.9
CRITICAL
EPSS Score
1.1 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
A Cross Site Scripting (XSS) vulnerability exists in Projeqtor 9.3.1 via /projeqtor/tool/saveAttachment.php, which allows an attacker to upload a SVG file containing malicious JavaScript code.
Technical details
- Published
- 2022-02-11
Frequently asked questions
What is CVE-2021-42940?
A Cross Site Scripting (XSS) vulnerability exists in Projeqtor 9.3.1 via /projeqtor/tool/saveAttachment.php, which allows an attacker to upload a SVG file containing malicious JavaScript code.
Is CVE-2021-42940 actively exploited?
Active exploitation of CVE-2021-42940 has not been confirmed. Its EPSS score was 1.1% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-42940?
CVE-2021-42940 has a CVSS v3 base score of 9.9 (CRITICAL severity).
Is CVE-2021-42940 affecting your environment?
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