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CVE-2026-78533

WordPress Qwery theme <= 3.6.1 - PHP Object Injection vulnerability

9.8 Critical

Unauthenticated PHP Object Injection in Qwery <= 3.6.1 versions.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

0.33%Unchanged since Oct 11, 2026
90%50%10%1%

What each source reports

CVE List Score used 9.8

WordPress Qwery theme <= 3.6.1 - PHP Object Injection vulnerability

Unauthenticated PHP Object Injection in Qwery <= 3.6.1 versions.

Record
CVE-2026-78533
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-502
Updated
2026-11-02
EUVDEUVD-2026-96528 9.8

Unauthenticated PHP Object Injection in Qwery <= 3.6.1 versions.

Record
EUVD-2026-96528
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
GitHub AdvisoriesGHSA-pvr3-238r-qr3r 9.8

Unauthenticated PHP Object Injection in Qwery <= 3.6.1 versions.

Unauthenticated PHP Object Injection in Qwery <= 3.6.1 versions.

Record
GHSA-pvr3-238r-qr3r
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-502
Updated
2026-11-02
NVD 9.8

Unauthenticated PHP Object Injection in Qwery <= 3.6.1 versions.

Record
CVE-2026-78533
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-502
Updated
2026-11-02

Affected products

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-78533 is a critical vulnerability (CVSS 9.8) in Ancorathemes Qwery, published October 10, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.33%, the 26th percentile. No source names a fixed version.

References

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