Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
OS4ED openSIS-Classic — openSIS Classic 9.3 - Authenticated path traversal in SentMail attachment download
AV AC AT PR UI VC VI VA CVSS EPSS %ile KEV
N L N L N L N N 5.3 .0038 31.0 —
AFFECTED
Product Versions Fixed
openSIS-Classic 9.3 – —
TIMELINE
Jun 10 Reserved by Fluid Attacks
Jul 14 EXPLOIT PUBLISHED — CVE-2026-11944 (OS4ED openSIS-Classic). Public exploit reference added.
Jul 14 Published (CNA: Fluid Attacks)
Description
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.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| June 10, 2026 | Reserved | Reserved by Fluid Attacks |
| July 14, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-11944 (OS4ED openSIS-Classic). Public exploit reference added. |
| July 14, 2026 | Published | Published (CNA: Fluid Attacks) |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| OS4ED | openSIS-Classic | — | 9.3 | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-11944 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.