CVE-2026-11944

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

5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS 3.1

6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS

0.5% chance of exploitation in the next 30 days; higher than 41% of CVEs (scores of 2026-10-25)

CWE

CWE-22

Published

2026-07-14

Modified

2026-10-24

Record from

the NVD, synced 2026-10-25

Affected

• os4ed:opensis

References

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

Check your stackJSON