CVE-2021-42940 json
A Cross Site Scripting (XSS) vulnerability exists in Projeqtor 9.3.1 via /projeqtor/tool/saveAttachment.php, which allows an attacker to up…
published 2022-02-11 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-29895
- cvss
- 9.9
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.1%
- EPSS 1.1% chance of exploitation in 30 days, percentile 65%
- public exploits
- 0
- none known
Summary
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.
Exploit prediction
1.08% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- truedigitalsecurity.com https://truedigitalsecurity.com/services/penetration-testing-services/advisory-summary-2.2022-cve-2021-42940 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.9 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
| NVD | 2.0 | 3.5 | AV:N/AC:M/Au:S/C:N/I:P/A:N |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
truedigitalsecurity.com
/services/penetration-testing-services/advisory-summary-2.2022-cve-2021-42940
exploit, third-party-advisory
-
projeqtor.org
/en/
product, vendor-advisory
Sources
- CVE List CVE-2021-42940
- NVD CVE-2021-42940
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