CVE-2026-3663 is an out-of-bounds read vulnerability affecting the xlnt-community xlnt library up to version 1.6.1, specifically within the XLSX File Parser component. This flaw allows a local attacker to trigger a denial of service. With a CVSS score of 3.3 (LOW), the vulnerability requires local access and has a low impact on availability. While a public exploit exists, there is no evidence of active exploitation, and it has garnered minimal community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 1.6.1CPE matchmatch criteria | cpe:2.3:a:xlnt-community:xlnt:*:*:*:*:*:*:*:* |
CVSS version used by this source: 4.0
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.