CVE-2026-3665A vulnerability was identified in xlnt-community xlnt up to 1.6.1.
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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A vulnerability was identified in xlnt-community xlnt up to 1.6.1. The affected element is the function xlnt::detail::xlsx_consumer::read_office_document of the file source/detail/serialization/xlsx_consumer.cpp of the component XLSX File Parser. The manipulation leads to null pointer dereference. The attack must be carried out locally. The exploit is publicly available and might be used.
- CVSS
- 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-404, CWE-476
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
xlnt-community xlnt xlnt-community:xlnt | through 1.6.1 | NVD |
References
- https://github.com/oneafter/0128/blob/main/xl4/reproexploit
- https://github.com/xlnt-community/xlnt/product
- https://github.com/xlnt-community/xlnt/issues/140exploit, issue-tracking, vendor-advisory
- https://vuldb.com/?ctiid.349554permissions-required, vdb-entry
- https://vuldb.com/?id.349554third-party-advisory, vdb-entry
- https://vuldb.com/?submit.764647third-party-advisory, vdb-entry
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.