CVE-2026-29856 — HIGH (7.5)

Vulnerability 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.

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Aapanel	Aapanel	7.57.0

Related Weaknesses (CWE)

CWE-400

References

https://github.com/aapanel/aapanelProduct
https://github.com/mbiesiad/vulnerability-research/tree/main/CVE-2026-29856ExploitThird Party Advisory

FAQ

What is CVE-2026-29856?

CVE-2026-29856 is a vulnerability with a CVSS score of 7.5 (HIGH). 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.

How severe is CVE-2026-29856?

CVE-2026-29856 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-29856?

Check the references section above for vendor advisories and patch information. Affected products include: Aapanel Aapanel.