CVE-2026-27064: Editor Arbitrary File Upload in Mailster <= 4.1.17 versions.

Details

Source

NVD Recent CVEs (US · database · site)

Severity

critical — CVSS 9.1

Published

2026-07-23

Last updated

2026-07-23

Exploitation

Not in CISA KEV at last sync

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-27064

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.

• Low exploitation riskCVE-2026-270640.28% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 20% of all scored CVEs.

Referenced CVEs

Recent advisories for Editor Arbitrary File

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

• mediumCVE-2026-65436: Editor Arbitrary File Deletion in Kirki <= 6.0.13 versions.nvd · 2026-07-27
• highCVE-2026-63739: SurrealDB before 3.1.5 contains an arbitrary file read vulnerability in the DEFINE ANALYZER ma…nvd · 2026-07-20

More from NVD Recent CVEs

• mediumCVE-2026-67355: guzzlehttp/guzzle versions before 7.15.1 fail to preserve host-only cookie scope, storing the …2026-08-01
• mediumCVE-2026-67354: guzzlehttp/guzzle versions before 7.15.1 contain an information disclosure vulnerability in Re…2026-08-01
• mediumCVE-2026-67353: guzzlehttp/guzzle versions before 7.15.1 contain a denial of service vulnerability in the Cook…2026-08-01
• highCVE-2026-67352: luci-app-https-dns-proxy contains a stored cross-site scripting vulnerability in the resolver_…2026-08-01
• mediumCVE-2026-67344: ArcadeDB before 26.7.2 fails to enforce the UPDATE_SCHEMA database permission on the ALTER TYP…2026-08-01