Threat intelligence

ShiftUp <= 1.3 - Unauthenticated PHP Object Injection

CVE-2026-40733 · shiftup

Important: Seeing this vulnerability listed does not mean your website is affected. Exposure depends on whether you run Shiftup at a vulnerable version. How SiteRespond intelligence works

Vulnerability: ShiftUp <= 1.3 - Unauthenticated PHP Object Injection
Affected software: shiftup(Theme)
Affected versions: ≤ 1.3
Authentication: Unauthenticated
Vulnerability type: Other
CVE: CVE-2026-40733
Published: 16 April 2026
CISA KEV: Not listed in CISA KEV at last catalog refresh
Impact: This advisory describes a other issue in the affected software. Review the source advisory and your installed version to assess exposure.
Source: Data imported from Wordfence Intelligence (advisory 90d40b66-e178-4f2b-beb3-9e45269abaea). Methodology and redistribution notes

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