Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-91752

CVE-2026-91752HIGH

GNU libextractor before 1.15 Stack Overflow via OLE2

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   N   N   N   N   N   H    8.7   .0074   53.0     —

AFFECTED
  Product       Versions     Fixed
  libextractor  unspecified  —

TIMELINE
  Sep 14  Reserved by VulnCheck
  Sep 15  Published (CNA: VulnCheck)
  Sep 16  EXPLOIT PUBLISHED — CVE-2026-91752 (GNU libextractor). Public exploit reference added.
  Sep 24  EXPLOIT PUBLISHED — CVE-2026-91752 (GNU libextractor). Public exploit reference added.

CWE-789 · CNA: VulnCheck · CVSS v4.0 · 6 references · NVD status: Awaiting Analysis

Description

GNU libextractor before 1.15 contains a stack-based buffer overflow vulnerability in the process_star_office function that sizes a variable-length stack array from attacker-controlled OLE2 stream data. Attackers can craft malicious StarOffice documents that allocate up to 4 MB on the stack, causing stack overflow and crashing any application extracting metadata from the document.

Lifecycle

Complete event history — 4 events, chronological
Date	Event	Detail
September 14, 2026	Reserved	Reserved by VulnCheck
September 15, 2026	Published	Published (CNA: VulnCheck)
September 16, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-91752 (GNU libextractor). Public exploit reference added.
September 24, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-91752 (GNU libextractor). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
GNU	libextractor	—	—	—

Weaknesses

CWE-789

References (6)

Authoritative record: CVE-2026-91752 at cve.org

Vendors: gnu

Weaknesses: CWE-789

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-91752 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 Saturday, October 3, 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.