Stored XSS in CI4MS Categories
CVE-2026-34567 is a stored cross-site scripting vulnerability in CI4MS, a CodeIgniter 4-based CMS skeleton. In versions prior to 0.31.0.0, user-controlled input associated with the Categories section is not properly sanitized during creation or editing of blog post content, and the stored data is later rendered without proper output encoding when Categories are viewed via blog posts. This allows an attacker to persist malicious JavaScript in server-side content and have it executed in other users' browsers when the affected content is displayed.
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
If you can’t patch tonight, do this now.
Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.