CVE-2026-65883

CRITICALPre-NVD 10.010.0
EchelonGraph scoreLOW confidence

This critical-severity CVE scores 10.0 under the CNA's CVSS (NVD's own analysis pending). EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: cna:joomla
Trending — 3 sources updated this week
10.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: —CVSS: 10.0Exploit: None knownExposed: 0

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

Joomla Extension - aimy-extensions.com - RCE via PHP object injection in Aimy Captcha-Less Form Guard 18.0 - 20.0 - A forged clfgd field allows PHP objection injection and thereby remote code execution.

CVSS v3
10.0
EG Score
10.0(low)
EG Risk
60(Track)
EG Risk 60/100SSVC: 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
Severity100% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
—
EPSS %ILE
—
KEV
Not listed

Published

July 29, 2026

Last Modified

July 29, 2026

Advisory Details (1)

Auto-updated Jul 29, 2026
No patch confirmed yet.
generic

Joomla! Captcha Plugin | Captcha Alternative | Joomla 6, 5, 4 & 3

https://www.aimy-extensions.com/joomla/captcha-less-form-guard.html

Vendor Advisories for CVE-2026-65883(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 10× in last 7d / 10× 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. 2026-07-29 14:48 UTCEG score recompute
  2. 2026-07-29 14:48 UTCGHSA enrichment
  3. 2026-07-29 13:38 UTCEG score recompute
  4. 2026-07-29 13:38 UTCGHSA enrichment
  5. 2026-07-29 13:18 UTCGHSA enrichment
  6. 2026-07-29 12:38 UTCEG score recompute
  7. 2026-07-29 12:38 UTCGHSA enrichment
  8. 2026-07-29 11:32 UTCEG score recompute
  9. 2026-07-29 10:23 UTCEG score recompute
  10. 2026-07-29 10:22 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(4)

What is CVE-2026-65883?
CVE-2026-65883 is a critical vulnerability published on July 29, 2026. Joomla Extension - aimy-extensions.com - RCE via PHP object injection in Aimy Captcha-Less Form Guard 18.0 - 20.0 - A forged clfgd field allows PHP objection injection and thereby remote code execution.
When was CVE-2026-65883 disclosed?
CVE-2026-65883 was first published in the National Vulnerability Database on July 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
What is the CVSS score of CVE-2026-65883?
CVE-2026-65883 has a CVSS v4.0 base score of 10.0 (CNA self-assessment; NVD's own analysis pending). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-65883?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-65883, 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-2026-65883

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