CVE-2026-73532 (GCVE-0-2026-73532)
Vulnerability from cvelistv5 – Published: 2026-08-13 16:01 – Updated: 2026-08-13 16:01 X_Known Exploited Vulnerability
VLAI
EPSS
VEX
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
9.8 (Critical)
CWE
- CWE-506 - Embedded Malicious Code
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://wpmanageninja.com/security-incident-on-31… | technical-description |
| https://wordpress.org/plugins/fluentform/ | product |
| https://patchstack.com/database/wordpress/plugin/… | third-party-advisory |
| https://www.vulncheck.com/advisories/fluent-forms… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| WPManageNinja | Fluent Forms Pro |
Affected:
6.2.7
(semver)
|
Date Public
2026-08-01 00:00
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"problemTypes": [
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"providerMetadata": {
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"tags": [
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{
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"tags": [
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},
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},
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"title": "Fluent Forms Pro 6.2.7 Embedded Malicious Code via Tampered Plugin Build",
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"dateReserved": "2026-08-12T19:29:19.866Z",
"dateUpdated": "2026-08-13T16:01:19.629Z",
"state": "PUBLISHED"
},
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"dataVersion": "5.2",
"vulnerability-lookup:meta": {
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}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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