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CVE-2026-73532 (GCVE-0-2026-73532)

Vulnerability from cvelistv5 – Published: 2026-08-13 16:01 – Updated: 2026-08-14 16:48 X_Known Exploited Vulnerability
VLAI Previdian
Title
Fluent Forms Pro 6.2.7 Embedded Malicious Code via Tampered Plugin Build
Summary
Fluent Forms Pro 6.2.7 contains an embedded malicious code vulnerability introduced via a tampered plugin build served through a decommissioned update server. The tampered build introduced a rogue PHP file (libs/class-license-sync.php), loaded via a require_once directive added to fluentformpro.php, that established a backdoor REST API endpoint, dropped persistent PHP files in mu-plugins and uploads directories, installed a passwordless administrator account, and registered scheduled tasks that survived plugin removal.
Severity
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-14 16:47 UTC
CWE
  • CWE-506 - Embedded Malicious Code
Assigner
References
Impacted products
Vendor Product Version CPE status
WPManageNinja Fluent Forms Pro Affected: 6.2.7 (semver)
guessed Create a notification for this product.
Date Public
2026-08-01 00:00
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 080da246-3d59-4f1f-826f-e9a2d3b99076

Vulnerability ID: CVE-2026-73532

Status: Confirmed

Status Updated: 2026-08-14 17:13 UTC

Exploited: Yes

Timestamps
First Seen: 2026-08-14
Asserted: 2026-08-14
Scope
Notes: Fluent Forms Pro 6.2.7 Embedded Malicious Code via Tampered Plugin Build | Affected: WPManageNinja / Fluent Forms Pro | CVSS: 9.3 (CRITICAL) | EPSS: 0.00463 | Used in malware: unknown | Not yet in CISA KEV: True
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title Fluent Forms Pro 6.2.7 Embedded Malicious Code via Tampered Plugin Build
Vendor WPManageNinja
Product Fluent Forms Pro
Added Date 2026-08-14T17:13:03.323Z
Cvss Score 9.3
Epss Score 0.00463
Cvss Severity CRITICAL
Epss Percentile 0.38121
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev True
References
Created: 2026-08-14 18:00 UTC | Updated: 2026-08-14 18:00 UTC
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.