CVE-2026-26351 describes a stored cross-site scripting (XSS) vulnerability in GetSimpleCMS Community Edition (CE) version 3.3.16, specifically within the Theme to Components functionality. An authenticated administrator can inject malicious JavaScript into the "slug" field of a component, which is then executed persistently in the administrative interface when viewed by any authenticated user. This vulnerability carries a CVSS score of 4.8 (Medium) and could lead to session hijacking or unauthorized administrative actions. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 3.3.16, < 3.3.22CPE matchmatch criteria | cpe:2.3:a:getsimple-ce:getsimple_cms:*:*:*:*:community:*:*:* |
CVSS version used by this source: 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/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 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.