CVE-2026-29859: An arbitrary file upload vulnerability in aaPanel v7.57.0 allows attackers to execute arbitrary code via uploa

This week

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2026-29859 is a critical-severity flaw (CVSS 9.8) affecting aapanel. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An arbitrary file upload vulnerability in aaPanel v7.57.0 allows attackers to execute arbitrary code via uploading a crafted file.

Why this priority

Critical severity
Public exploit reference
CISA SSVC: automatable with total technical impact
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 55%)
CISA exploited list	No
Weakness	CWE-79, CWE-434
Published	2026-03-18
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: aapanel

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-18 18:16 UTCPublished CVE record published
2026-06-17 10:29 UTCUpdated Record last modified

aapanel aapanel DOWNGRADE

Affected: 7.57.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.57.0

1. Check installed version

apt-cache policy aapanel || rpm -q aapanel || aapanel --version

2. No fixed release: DOWNGRADE to a release before 7.57.0 (Debian / Ubuntu)

apt-cache madison aapanel sudo apt install aapanel=<VERSION_BEFORE_7.57.0> sudo apt-mark hold aapanel

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list aapanel sudo dnf downgrade aapanel-<VERSION_BEFORE_7.57.0> sudo dnf versionlock add aapanel

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Exact fixes by distribution

A distro patch exists: prefer upgrading over downgrading.

Fedora ELN · openldap · FIXED · 2.6.16-1.eln159 · FEDORA-2026-4b30c86326 · source

sudo dnf upgrade --advisory=FEDORA-2026-4b30c86326

Fedora 46 · php-pecl-yac · FIXED · 3.0.1-2.fc46 · FEDORA-2026-5f43289aa2 · source

sudo dnf upgrade --advisory=FEDORA-2026-5f43289aa2

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Write-up: github.com/mbiesiad/vulnerability-research/tree/main/CVE-2026-29859

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-29859?

aapanel: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-29859 being exploited?

CVE-2026-29859 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-29859 affect?

CVE-2026-29859 affects aapanel. Severity is critical (CVSS 9.8). An arbitrary file upload vulnerability in aaPanel v7.57.0 allows attackers to execute arbitrary code via uploading a crafted file.

How urgent is CVE-2026-29859?

Priority 58/100. Critical severity; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-29858 HIGH 7.5 DOWNGRADE A lack of path validation in aaPanel v7.57.0 allows attackers to execute a local file inclusion (LFI), leading
CVE-2026-29856 HIGH 7.5 DOWNGRADE An issue in the VirtualHost configuration handling/parser component of aaPanel v7.57.0 allows attackers to cau
CVE-2024-42922 MEDIUM 6.5 UPGRADE AAPanel v7.0.7 was discovered to contain an OS command injection vulnerability.

References

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