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CVE-2026-48939: iCagenda Unrestricted Upload of File with Dangerous Type Vulnerability

criticalknown exploitedpublic exploitCVE-2026-48939
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
iCagenda contains an unrestricted upload of file with dangerous type vulnerability that allows the upload of arbitrary files in the file attachment feature, ultimately resulting in PHP code upload and execution.

CSIRTS triage

vendor: iCagendaproduct: iCagendaRemote code execution
What
iCagenda contains an unrestricted upload of file with dangerous type vulnerability that allows the upload of arbitrary files.
Who is affected
Deployments of iCagenda that utilize the file attachment feature.
Urgency
Remediation is urgent due to active exploitation and critical severity.
Action
Apply the latest patch to mitigate the vulnerability.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2026-07-10
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-48939

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-48939coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

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