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CVE-2026-81780

WordPress Hash Form plugin <= 1.4.2 - Arbitrary File Upload vulnerability

10.0 CriticalPublic exploit

CVE-2026-81780 is a critical vulnerability (CVSS 10.0) in Hashthemes Hash Form, published August 31, 2026. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.52%, the 44th percentile. No source names a fixed version.

What does this mean?
Severity
10.0 CriticalCVSS 3.1, CVE List
Exploit chance
0.52%EPSS, 44th percentile
Exploitation
None known2 public exploits
Fixed in
No fix listedNo source names one

Description

Unauthenticated Arbitrary File Upload in Hash Form <= 1.4.2 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

0.52%Up 0.2 points since Sep 1, 2026
90%50%10%1%

Affected products

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
PoC in GitHub0xCyp1337/CVE-2026-817802026-10-07
PoC in GitHub0xTerror/CVE-2026-81780-Hash-Form2026-09-07

What each source reports

CVE List Score used10.0

WordPress Hash Form plugin <= 1.4.2 - Arbitrary File Upload vulnerability

Unauthenticated Arbitrary File Upload in Hash Form <= 1.4.2 versions.

Record
CVE-2026-81780
CVSS 3.1
10.0 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Weakness
CWE-434
Updated
2026-11-02
EUVDEUVD-2026-6879210.0

Unauthenticated Arbitrary File Upload in Hash Form <= 1.4.2 versions.

Record
EUVD-2026-68792
CVSS 3.1
10.0 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Updated
2026-11-02
GitHub AdvisoriesGHSA-chvv-mh28-xhg510.0

Unauthenticated Arbitrary File Upload in Hash Form <= 1.4.2 versions.

Unauthenticated Arbitrary File Upload in Hash Form <= 1.4.2 versions.

Record
GHSA-chvv-mh28-xhg5
CVSS 3.1
10.0 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Weakness
CWE-434
Updated
2026-11-02
NVD10.0

Unauthenticated Arbitrary File Upload in Hash Form <= 1.4.2 versions.

Record
CVE-2026-81780
CVSS 3.1
10.0 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Weakness
CWE-434
Updated
2026-11-02

History

History
RecordedChangedSources
aliases, publishedEUVD
first indexedCVE List, GitHub Advisories, NVD, PoC in GitHub

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

References

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