CVE-2026-73532

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-13. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
59(Track)
EG Risk 59/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
38%
KEV
Not listed

Published

August 13, 2026

Last Modified

August 14, 2026

Advisory Details (4)

Auto-updated Aug 14, 2026
No patch confirmed yet.
generic

Fluent Forms Pro 6.2.7 Embedded Malicious Code via Tampered Plugin Build | Advisories | VulnCheck

https://www.vulncheck.com/advisories/fluent-forms-pro-embedded-malicious-code-via-tampered-plugin-build
generic

WPManageNinja Security Incident: July 31, 2026

https://wpmanageninja.com/security-incident-on-31-july-2026/
generic

Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder – WordPress plugin | WordPress.org

https://wordpress.org/plugins/fluentform/
generic

Backdoor in WordPress Fluent Forms Pro Add On Pack Plugin - Patchstack

https://patchstack.com/database/wordpress/plugin/fluentformpro/vulnerability/wordpress-fluent-forms-pro-add-on-pack-plugin-6-2-7-6-2-7-remote-code-execution-vulnerability

Vendor Advisories for CVE-2026-73532(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 64× in last 7d / 72× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-21 07:29 UTCGHSA enrichment
  2. 2026-08-21 03:48 UTCGHSA enrichment
  3. 2026-08-21 00:08 UTCEG score recompute
  4. 2026-08-21 00:08 UTCGHSA enrichment
  5. 2026-08-20 22:56 UTCEPSS rescore
  6. 2026-08-20 20:28 UTCGHSA enrichment
  7. 2026-08-20 16:47 UTCGHSA enrichment
  8. 2026-08-20 13:07 UTCGHSA enrichment
  9. 2026-08-20 09:14 UTCGHSA enrichment
  10. 2026-08-20 05:33 UTCGHSA enrichment
  11. 2026-08-20 01:53 UTCGHSA enrichment
  12. 2026-08-19 22:12 UTCGHSA enrichment
  13. 2026-08-19 18:27 UTCEG score recompute
  14. 2026-08-19 18:27 UTCGHSA enrichment
  15. 2026-08-19 17:04 UTCEPSS rescore
  16. 2026-08-19 13:05 UTCGHSA enrichment
  17. 2026-08-19 09:25 UTCGHSA enrichment
  18. 2026-08-19 05:45 UTCGHSA enrichment
  19. 2026-08-19 02:04 UTCGHSA enrichment
  20. 2026-08-18 22:24 UTCGHSA enrichment
  21. 2026-08-18 18:43 UTCGHSA enrichment
  22. 2026-08-18 15:03 UTCEG score recompute
  23. 2026-08-18 15:02 UTCGHSA enrichment
  24. 2026-08-18 13:49 UTCEPSS rescore
  25. 2026-08-18 13:49 UTCEPSS rescore
Show 47 more
  1. 2026-08-18 09:55 UTCGHSA enrichment
  2. 2026-08-18 06:14 UTCGHSA enrichment
  3. 2026-08-18 02:32 UTCGHSA enrichment
  4. 2026-08-17 22:51 UTCGHSA enrichment
  5. 2026-08-17 19:10 UTCGHSA enrichment
  6. 2026-08-17 15:16 UTCEG score recompute
  7. 2026-08-17 15:16 UTCGHSA enrichment
  8. 2026-08-17 13:47 UTCEPSS rescore
  9. 2026-08-17 11:35 UTCGHSA enrichment
  10. 2026-08-17 07:55 UTCGHSA enrichment
  11. 2026-08-17 04:15 UTCGHSA enrichment
  12. 2026-08-17 00:35 UTCGHSA enrichment
  13. 2026-08-16 20:55 UTCGHSA enrichment
  14. 2026-08-16 17:15 UTCEG score recompute
  15. 2026-08-16 17:15 UTCGHSA enrichment
  16. 2026-08-16 14:56 UTCEPSS rescore
  17. 2026-08-16 14:56 UTCEPSS rescore
  18. 2026-08-16 13:35 UTCGHSA enrichment
  19. 2026-08-16 09:54 UTCGHSA enrichment
  20. 2026-08-16 06:14 UTCGHSA enrichment
  21. 2026-08-16 02:34 UTCEG score recompute
  22. 2026-08-16 02:34 UTCGHSA enrichment
  23. 2026-08-16 02:15 UTCEPSS rescore
  24. 2026-08-15 22:54 UTCGHSA enrichment
  25. 2026-08-15 19:14 UTCGHSA enrichment
  26. 2026-08-15 15:34 UTCGHSA enrichment
  27. 2026-08-15 11:54 UTCGHSA enrichment
  28. 2026-08-15 08:14 UTCGHSA enrichment
  29. 2026-08-15 04:34 UTCEG score recompute
  30. 2026-08-15 04:34 UTCGHSA enrichment
  31. 2026-08-15 01:31 UTCEPSS rescore
  32. 2026-08-15 00:54 UTCGHSA enrichment
  33. 2026-08-14 21:14 UTCGHSA enrichment
  34. 2026-08-14 17:34 UTCEG score recompute
  35. 2026-08-14 17:34 UTCGHSA enrichment
  36. 2026-08-14 17:07 UTCEG score recompute
  37. 2026-08-14 17:07 UTCGHSA enrichment
  38. 2026-08-14 14:26 UTCGHSA enrichment
  39. 2026-08-14 10:46 UTCGHSA enrichment
  40. 2026-08-14 07:06 UTCGHSA enrichment
  41. 2026-08-14 03:26 UTCGHSA enrichment
  42. 2026-08-13 23:46 UTCGHSA enrichment
  43. 2026-08-13 20:05 UTCEG score recompute
  44. 2026-08-13 20:05 UTCGHSA enrichment
  45. 2026-08-13 16:25 UTCEG score recompute
  46. 2026-08-13 16:17 UTCEG score recompute
  47. 2026-08-13 16:17 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-73532?
CVE-2026-73532 is a critical vulnerability published on August 13, 2026. 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…
When was CVE-2026-73532 disclosed?
CVE-2026-73532 was first published in the National Vulnerability Database on August 13, 2026, with the most recent update on August 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-73532 actively exploited?
CVE-2026-73532 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 61.5% of all scored CVEs.
What is the CVSS score of CVE-2026-73532?
CVE-2026-73532 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-73532?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-73532, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-73532

Explore →

Is Your Infrastructure Affected by CVE-2026-73532?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs