CVE-2026-48939

Exploitation

Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2026-07-10. Federal remediation due 2026-07-13.

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

19.73% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 97.2% 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 2026-07-11.

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 11:56Z2 MO AGO

Last updated

2026-08-12 13:58Z23 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

6d1aad5009ce4417bce270ea85eb668e6686682e1e22ef2bc67c2c52120a1c45

• www.icagenda.comhttps://www.icagenda.com/product
• mysites.guruhttps://mysites.guru/blog/icagenda-zero-day-file-upload-rce/third-party-advisory
• www.icagenda.comhttps://www.icagenda.com/docs/changelog/icagenda-3-9-15patch
• www.icagenda.comhttps://www.icagenda.com/docs/changelog/icagenda-4-0-8patch
• github.comhttps://github.com/Polosss/By-Poloss..-..CVE-2026-48939exploit
• www.cisa.govhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-48939government-resource