by Kastro
Paper/Archive/CVE-2026-42097

CVE-2026-42097

Sparx Systems Pro Cloud Server — Authentication Bypass in Sparx Pro Cloud Server

EPSS 0.9%CVSS 9.3
critical.is priorityof 100
40
CVSS 9.3 (CNA)9.3 / 10 × 3027.9Not in CISA KEV+300.0EPSS percentile 61.0.610 × 2012.2No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

Sparx Pro Cloud Server requires authentication based on requested URL. An attacker can omit the "model" query parameter and send the model name only in the binary blob in POST request allowing SQL query execution without authentication. The vendor was notified early about this vulnerability, but didn't respond with the details of vulnerability or vulnerable version range. Only version 6.1 (build 167) and below were tested and confirmed as vulnerable, other versions were not tested and might also be vulnerable.

Affected

ProductAffectedFixed inSource
Pro Cloud Server≤ 6.1–CNA

Scores by source

CERT-PL (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

writeupcert.pl/en/posts/2026/05/CVE-2026-42096refsparxsystems.com/products/procloudserverwriteupsploit.tech/2026/05/19/Sparx-Enterprise-Architect-PCS.htmlwriteupefigo.pl/blog/CVE-2026-42096