CVE-2026-11944

openSIS Classic 9.3 - Authenticated path traversal in SentMail attachment download

CVSS 5.3 MEDIUMCWE-22

Vexday Risk Score

10Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 5.3EPSS —KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

14 Jul 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

openSIS Classic 9.3 contains an authenticated path traversal vulnerability in the legacy messaging sent-mail attachment download functionality that allows an authenticated attacker to read arbitrary files on the server via crafted path traversal sequences.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Affected products

OS4ED · openSIS-Classic

References

https://fluidattacks.com/es/advisories/toto https://github.com/OS4ED/openSIS-Classic