CVE-2021-42940
CRITICALCVSS 9.9/10EPSS 1.07%
Last modified
CVE-2021-42940 is a critical-severity vulnerability rated 9.9/10 on the CVSS scale. 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.. EPSS estimates a 1.07% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Projeqtor | Projeqtor | <= 9.3.1 |
References
- https://truedigitalsecurity.com/services/penetration-testing-services/advisory-summary-2.2022-cve-2021-42940Exploit, Third Party Advisory
- https://www.projeqtor.org/en/Product, Vendor Advisory
- https://truedigitalsecurity.com/services/penetration-testing-services/advisory-summary-2.2022-cve-2021-42940Exploit, Third Party Advisory
- https://www.projeqtor.org/en/Product, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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.
How severe is CVE-2021-42940?
CVE-2021-42940 has a CVSS score of 9.9/10 (CRITICAL severity). The EPSS model estimates a 1.07% probability of exploitation in the next 30 days.
How do I fix CVE-2021-42940?
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.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-42940?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST