CVE-2026-2703 identifies an off-by-one vulnerability in the xlnt-community xlnt library, specifically within the xlnt::detail::decode_base64 function used for parsing encrypted XLSX files, affecting versions up to 1.6.1. This flaw carries a low severity CVSS score of 3.3, requiring local access and user privileges to trigger, and primarily impacts availability. While a public exploit exists and a patch is available (f2d7bf494e5c52706843cf7eb9892821bffb0734), 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, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.