CVE-2026-2858 describes an out-of-bounds read vulnerability in the peekChar function within the Source File Parser component of wren-lang wren versions up to 0.4.0. This flaw allows a local attacker to achieve high confidentiality and availability impact with low attack complexity. While no active exploitation is reported, a public exploit exists, and the vendor has not yet responded to the reported issue. Community discussion and media coverage for this CVE are currently minimal.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 0.4.0CPE matchmatch criteria | cpe:2.3:a:wren:wren:*:*:*:*:*:*:*:* |
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.
Remediation records are not available for this CVE.