How severe is CVE-2023-31435?

CVE-2023-31435 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2023-31435 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-31435?

CVE-2023-31435 primarily affects Evasys. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-31435?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-31435 published?

CVE-2023-31435 was published on 2023-05-02 and last updated on 2026-06-17.

CVE-2023-31435

CVE-2023-31435 is a high-severity vulnerability in Evasys with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-863.

Key facts

Severity: High (CVSS 3.x base score 8.1)
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-863
Affected product: Evasys
Published: 2023-05-02
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2023-31435?: CVE-2023-31435 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2023-31435 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-31435?: CVE-2023-31435 primarily affects Evasys. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-31435?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-31435 published?: CVE-2023-31435 was published on 2023-05-02 and last updated on 2026-06-17.

References

https://cves.at/posts/cve-2023-31435/writeup/

Affected products (2)

cpe:2.3:a:evasys:evasys:8.2:-:*:*:*:*:*:*
cpe:2.3:a:evasys:evasys:9.0:-:*:*:*:*:*:*

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