CVE-2023-26949: An arbitrary file upload vulnerability in the component /admin1/config/update of onekeyadmin v1.3.9 allows att

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CRITICAL 9.8REMOTEDOWNGRADE

CVE-2023-26949 is a critical-severity flaw (CVSS 9.8) affecting onekeyadmin. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An arbitrary file upload vulnerability in the component /admin1/config/update of onekeyadmin v1.3.9 allows attackers to execute arbitrary code via a crafted PHP file.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.9% (top 39%)
CISA exploited list	No
Weakness	CWE-434
Published	2023-03-06
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: onekeyadmin

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

Am I affected?

Timeline

2023-03-06 21:15 UTCPublished CVE record published
2026-06-17 05:43 UTCUpdated Record last modified

onekeyadmin onekeyadmin DOWNGRADE

Affected: 1.3.9

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.3.9

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.3.9 (Debian / Ubuntu)

apt-cache madison onekeyadmin sudo apt install onekeyadmin=<VERSION_BEFORE_1.3.9> sudo apt-mark hold onekeyadmin

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

dnf --showduplicates list onekeyadmin sudo dnf downgrade onekeyadmin-<VERSION_BEFORE_1.3.9> sudo dnf versionlock add onekeyadmin

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.

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-2023-26949?

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

Is CVE-2023-26949 being exploited?

CVE-2023-26949 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-2023-26949 affect?

CVE-2023-26949 affects onekeyadmin. Severity is critical (CVSS 9.8). An arbitrary file upload vulnerability in the component /admin1/config/update of onekeyadmin v1.3.9 allows attackers to execute arbitrary code via a crafted PHP file.

How urgent is CVE-2023-26949?

Priority 59/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

Related CVEs

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CVE-2023-26954 MEDIUM 5.4 DOWNGRADE onekeyadmin v1.3.9 was discovered to contain a stored cross-site scripting (XSS) vulnerability via the User Gr
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References

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