Auth bypass in Evasys
CVE-2023-31435
Multiple components (such as Onlinetemplate-Verwaltung, Liste aller Teilbereiche, Umfragen anzeigen, and questionnaire previews) in evasys before 8.2 Build 2286 and 9.x before 9.0 Build 2401 allow authenticated attackers to read and write to unauthorized data by accessing functions directly.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.007 (51.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 51.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Evasys — versions 8.2, 9.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cves.at/posts/cve-2023-31435/writeup/ (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2023-31435?
- CVE-2023-31435 is a high-severity vulnerability in Evasys, classified under Incorrect Authorization. CVSS score: 8.1/10. Published 2023-05-02.
- How severe is CVE-2023-31435?
- High severity. CVSS v3 base score is 8.1 out of 10.
- Is CVE-2023-31435 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.