CVE-2026-48908

Exploitation

Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2026-07-07. Federal remediation due 2026-07-10.

SSVC decision

• ExploitationactiveCISA reports credible evidence of active exploitation.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

14.82% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 96.4% of scored records. A rank, not a probability.

NVD base score

10.0 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:X/RE:X/U:Red

NVD analysis status

Analyzed. NVD last modified this record on 2026-07-08.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-06-20 11:57Z2 MO AGO

Last updated

2026-08-12 13:56Z23 DAYS AGO

Reserved

2026-05-26

Assigning CNA

Joomla

Record state

PUBLISHED

Severity

Critical (CVSS 10.0)

CNA CVSS vector

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

Weaknesses

• CWE-434Unrestricted Upload of File with Dangerous TypeBase

Data version

5.2

Document digest

a39af12fd3cc3bb7e3f872c869f2812b9f6e8de25b8446e19ed64af1140fbdc0

• www.joomshaper.comhttps://www.joomshaper.com/page-builderproduct
• mysites.guruhttps://mysites.guru/blog/sp-page-builder-zero-day-uploadcustomicon-rce/third-party-advisory
• www.joomshaper.comhttps://www.joomshaper.com/forum/question/45152vendor-advisory
• extensions.joomla.orghttps://extensions.joomla.org/extension/sp-page-builder/patch
• www.cisa.govhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-48908government-resource