CVE-2026-29856 Details
Description
An issue in the VirtualHost configuration handling/parser component of aaPanel v7.57.0 allows attackers to cause a Regular Expression Denial of Service (ReDoS) via a crafted input.
A Regular Expression Denial-of-Service (ReDoS) vulnerability has been identified in aaPanel version 7.57.0. The issue arises in the VirtualHost configuration parser, where a backtracking-prone regular expression is used to match <VirtualHost ... :> blocks. This pattern can be exploited by supplying crafted input, leading to excessive CPU usage or process timeouts.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Mar 19, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/aapanel/aapanel | [email protected] | Product |
| https://github.com/mbiesiad/vulnerability-research/tree/main/CVE-2026-29856 | [email protected] | ExploitThird Party Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-400 | Uncontrolled Resource Consumption | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| aapanel aapanel | 7.57.0 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Mar 19, 2026 | Initial Analysis | [email protected] |
| Mar 19, 2026 | CVE Modified | CISA-ADP |
| Mar 18, 2026 | New CVE Received | [email protected] |