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.
AV AC PR UI S C I A CVSS EPSS %ile KEV N L N N U L N L 6.5 .0023 13.8 —
AFFECTED Product Versions Fixed n/a n/a – —
TIMELINE Feb 16 Reserved by mitre Jun 3 EXPLOIT PUBLISHED — CVE-2026-26824. Public exploit reference added. Jun 3 Published (CNA: mitre)
libxls through version 1.6.3 contains a use of uninitialized memory vulnerability in the OLE container parser. Memory allocated for the Master Sector Allocation Table (MSAT) in read_MSAT() is not fully initialized before being consumed by ole2_validate_sector_chain(), which may result in application crashes or potential information disclosure when processing a crafted XLS file
| Date | Event | Detail |
|---|---|---|
| February 16, 2026 | Reserved | Reserved by mitre |
| June 3, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-26824. Public exploit reference added. |
| June 3, 2026 | Published | Published (CNA: mitre) |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| n/a | n/a | — | n/a | — |
Authoritative record: CVE-2026-26824 at cve.org
Weaknesses: CWE-457
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-26824 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.