XSS in Projeqtor
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.011 (63.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 63.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.projeqtor.org/en/ (Product, Vendor Advisory)
- truedigitalsecurity.com/services/penetration-testing-services/advisory-summary-… (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-42940?
- CVE-2021-42940 is a critical-severity vulnerability in Projeqtor, classified under Cross-site Scripting. CVSS score: 9.9/10. Published 2022-02-11.
- How severe is CVE-2021-42940?
- Critical severity. CVSS v3 base score is 9.9 out of 10.
- Is CVE-2021-42940 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.