What is CVE-2026-57958?

CVE-2026-57958 is a medium-severity vulnerability in Inovector Mixpost, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-06-29.

How severe is CVE-2026-57958?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Inovector Mixpost

CVE-2026-57958

Mixpost through 2.6.0 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to execute arbitrary JavaScript in authenticated users' browsers by crafting malicious OAuth callback URLs with unsanitized…

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Inovector Mixpost — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

disclosure@vulncheck.com (issue-tracking)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-57958?: CVE-2026-57958 is a medium-severity vulnerability in Inovector Mixpost, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-06-29.
How severe is CVE-2026-57958?: Medium severity. CVSS v3 base score is 6.1 out of 10.