CVE-2026-34234
High PUBLISHEDCtrlPanel: Unauthenticated RCE using installer script
Not yet in CISA KEV
Recommended Action
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
At a Glance
CtrlPanel is open-source billing software for hosting providers. In versions 1.1.1 and prior, the web-based installer (public/installer/index.php) is vulnerable to unauthenticated Remote Code Execution (RCE) because it performs the install.lock check only after including and executing form handler files, leaving installer endpoints reachable on already-installed instances. The handlers also pass unsanitized user input directly into shell commands, allowing an attacker to submit crafted requests that execute arbitrary commands on the server. The vulnerability stems from two combined weaknesses: (1) premature form handler execution before the lock file gate, and (2) unsafe use of user input in shell command construction. This issue is reported to be actively exploited in the wild. The issue has been fixed in version 1.2.0.
- CVE Published
- May 19, 2026
- Exploitation Reported
- Jun 01, 2026
- CVSS
- 10.0 Critical
- EPSS
- 0.8%
Affected Versions
| Vendor | Product | Version | Status |
|---|---|---|---|
| Ctrlpanel-gg |
panel
|
< 1.2.0 |
Affected |
CVE References
- https://github.com/Ctrlpanel-gg/panel/security/advisories/GHSA-jmhr-q9q5-fqwh github.com · CVE Record https://github.com/Ctrlpanel-gg/panel/security/advisories/GHSA-jmhr-q...
- https://github.com/Ctrlpanel-gg/panel/releases/tag/1.2.0 github.com · CVE Record https://github.com/Ctrlpanel-gg/panel/releases/tag/1.2.0
Recommended Actions
- Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
- Check enrichment artifacts for scanner coverage and available PoCs before rolling remediation validation.
- Use the Pro API to automate enrichment, telemetry, and workflow delivery for VM, SOC, and CTI pipelines.
Known Exploited Vulnerability Sources
Catalogues that list this CVE as a known exploited vulnerability.
Per-source evidence links for KEV attestations are available through the KEVIntel Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| CVE First | 2026-06-01 13:29 UTC |
No detection artifacts or sensor request patterns are available for this CVE yet.
Check back as sensor telemetry and scanner integrations are updated.
Virtual Patch
Compensating WAF rules to help reduce exposure to this CVE. Rule content and deployable vendor exports are available with KEVIntel Enterprise.
KEVIntel does not currently have a virtual patch for this CVE. When available, KEVIntel virtual patches ship as deployable ModSecurity, Cloudflare, and AWS WAF rules.
Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to KEVIntel Enterprise users.
CVSS Scores
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Exploitation Status
Exploited in the wild
Recorded 2026-06-01 13:29:18 UTC · CVE
Proof of concept available
Recorded 2026-06-04 13:54:37 UTC · GitHub
Weaknesses (CWE)
-
Improper Access Control
-
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Potential Proof of Concepts
These PoCs are unverified and could contain malware. Use at your own risk.
github · Created 2026-06-04 13:54:37 UTC · 0 stars
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
13:54 UTC about 1 month ago13:54 UTC · about 1 month ago
Public PoC available
Public proof-of-concept code published
-
13:29 UTC about 2 months ago13:29 UTC · about 2 months ago
Added to KEVIntel KEV Feed
High-confidence, third-party attested exploitation
-
21:03 UTC about 2 months ago21:03 UTC · about 2 months ago
CVE published
Vulnerability disclosed publicly
-
16:22 UTC 4 months ago16:22 UTC · 4 months ago
CVE ID reserved
Identifier reserved by the CNA
Automate This Intelligence with the Pro API
Confidence scoring, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
Pro API Example
GET /api/v2/pro/kevs/CVE-2026-34234
{
"cve_id": "CVE-2026-34234",
"title": "CtrlPanel: Unauthenticated RCE using installer script",
"affected_vendor": "Ctrlpanel-gg",
"affected_product": "panel",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "High",
"cvss_score": 10.0,
"epss_score": 0.00821,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}