Vulnerability report

Exploited in the wild Confirmed confidence In CISA KEV

CVE-2026-48908

SP Page Builder extension for Joomla Remote Code Execution

Joomshaper.net / SP Page Builder extension for Joomla · 1.0.0-6.6.1

Watch CVE-2026-48908 Browse KEV feed
Severity
CVSS 10.0 · Critical
Confidence
Confirmed
Exploit status
Exploited in the wild
EPSS
88.5%
First observed
—
Last observed
—

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2026-48908 is an unauthenticated vulnerability affecting Joomshaper.net SP Page Builder extension for Joomla. A vulnerability in SP Page Builder for Joomla allows unauthenticated users to upload arbitrary files,...

Is it exploited?

Yes. Previdian tracks this CVE as a known exploited vulnerability. Confidence is confirmed. Listed in CISA KEV. Also confirmed by third-party sources.

Who is affected?

Joomshaper.net / SP Page Builder extension for Joomla 1.0.0-6.6.1.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

SP Page Builder extension for Joomla Remote Code Execution

A vulnerability in SP Page Builder for Joomla allows unauthenticated users to upload arbitrary files, ultimately resulting in the upload and execution of PHP code.

joomshaper.net Affected
SP Page Builder extension for Joomla
1.0.0-6.6.1
Published
20 Jun 2026
Exploitation Reported
07 Jul 2026
Attack vector
Remote
Complexity
Low
Privileges
None
User interaction
None

Tags

joomla php dotnet cisa nuclei_scanner

CVE References

Exploitation evidence

Why Previdian marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

CISA

Recorded 07 Jul 2026

A trusted third party reported exploitation.

Proof of concept available

GitHub

Recorded 22 Jun 2026

Public scanner or PoC coverage increases practical exploitability.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the Previdian Pro API.

Learn about Pro API access
Source Added
CISA First 2026-07-07 17:00 UTC
CVE 2026-07-07 18:20 UTC
All CISA Advisories 2026-07-07 19:20 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets
User-Agents
Callback hosts
0
0
0

Request targets and User-Agents available in Pro. Callback host details available in Enterprise.

Virtual patch status

No Previdian virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

Scanner Artifacts

Scanner and exploit-framework references linked to this CVE.

Scanner Reference Detected
Nuclei https://github.com/projectdiscovery/nuclei-templates/blob/main/javascript/cves/2026/CVE-2026-48908.yaml 23 Jul 2026

Risk and context

Severity, weaknesses, and research context

CVSS v4.0

10.0 Critical

Potential damage if exploited. Separate from whether attackers are using it.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/AU:Y/U:Red

EPSS

88.5%

Estimated chance of exploitation in the next 30 days. Previdian's warning comes from evidence, not this score.

Weaknesses

Unrestricted Upload of File with Dangerous Type CWE-434

Recent mention · All CISA Advisories

CISA Adds Three Known Exploited Vulnerabilities to Catalog

CISA has added three new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation. CVE-2026-48908 JoomShaper SP Page Builder Unrestricted Upload of File with Dangerous Type Vulnerability CVE-2026-55255 Langflow...

Read full advisory

All CVSS Scores

CVSS v4.0 10.0 Critical

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/AU:Y/U:Red

CVSS v3.1 9.8 Critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Potential Proof of Concepts

These PoCs are unverified and could contain malware. Use at your own risk.

theendofabbys/CVE-2026-48908

github · Created 2026-10-08 12:08:56 UTC · 0 stars · AI assessment 90%

winrarzipsexploit/CVE-2026-48908

github · Created 2026-09-17 17:48:56 UTC · 0 stars · AI assessment 85%

CVE-2026-48908 SP Page Builder (Joomla) unauth RCE suite — authorized testing only

yora1928/CVE-2026-48908-by-yora

github · Created 2026-08-12 16:12:13 UTC · 1 stars · AI assessment 85%

Passive security checker for CVE-2026-48908 affecting SP Page Builder.

SP Page Builder for Joomla allows unauthenticated arbitrary file upload via asset.uploadCustomIcon, enabling PHP upload and remote code execution.

pruva · Created 2026-07-08 04:49:49 UTC

Severity: CRITICAL | CVE: CVE-2026-48908 | Package: SP Page Builder (com_sppagebuilder)

Joomla SP Page Builder <= 6.6.1 - Unauthenticated Arbitrary File Upload RCE

nuclei · Created Unknown

Timeline

From disclosure to observed exploitation

  1. 04:31 UTC

    Nuclei template available

    Scanner coverage available

  2. 04:49 UTC

    Public PoC available

    Public proof-of-concept code published

  3. 19:20 UTC

    KEV confirmed by All CISA Advisories

    Exploitation attested by an external source

  4. 18:20 UTC

    KEV confirmed by CVE

    Exploitation attested by an external source

  5. 17:00 UTC

    Added to CISA KEV

    Listed in the CISA Known Exploited Vulnerabilities catalog

  6. 11:57 UTC

    CVE published

    Vulnerability disclosed publicly

  7. 10:06 UTC

    CVE ID reserved

    Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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  • Evidence confidence and provenance
  • First-party sensor telemetry
  • PoC and scanner references
  • Affected versions and enrichment
  • Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2026-48908

Free JSON includes basic KEV fields 
{
  "cve_id": "CVE-2026-48908",
  "confidence": "Confirmed",
  "cvss_score": 10.0,
  "cvss_estimated": false,
  "epss_score": 0.88512,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}