HIGHCVSS v3.1 7.5Vulnerability
CVE-2026-128346
ExcelJS through 4.4.0 contains a resource leak vulnerability in the streaming WorkbookReader.parse that leaves temporary files and open descriptors when sheet parsing fails or iteration stops early. Attackers can repeatedly upload malformed multi-sheet workbooks with worksheets placed before xl/sharedStrings.xml to fill the temporary directory and exhaust file descriptors.
Properties
- Severity
- HIGH
- Nvd fetched at
- 2026-11-14T00:40:25.638091+00:00
- Epss score
- 0.0063
- Cvss severity
- HIGH
- Cvss score
- 7.5
- Retrieved at
- 2026-11-14T00:51:03+00:00
- Last source
- FIRST EPSS
- Score
- 7.5
- Cvss version
- 3.1
- Cve id
- CVE-2026-128346
- Cvss vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- First seen by Signal
- 2026-11-13T17:31:47+00:00
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Published at
- 2026-11-13T10:18:15.273
- Last modified
- 2026-11-13T15:48:52.237
- Epss percentile
- 0.50743
Related Entities (1)
HAS_WEAKNESS (1)
Related research
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