CVE-2023-53888: Zomplog 3.9 contains a remote code execution vulnerability that allows authenticated attackers to inject and e

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HIGH 8.8DOWNGRADE

CVE-2023-53888 is a high-severity flaw (CVSS 8.8) affecting zomplog. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Zomplog 3.9 contains a remote code execution vulnerability that allows authenticated attackers to inject and execute arbitrary PHP code through file manipulation endpoints. Attackers can upload files (such as JavaScript) and rename them to .php via the saveE and rename actions, then execute the resulting PHP payload to run system commands.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.0% (top 39%)
CISA exploited list	No
Weakness	CWE-94
Published	2025-12-15
Last modified	2026-06-17

Publisher (CNA): VulnCheck · Vendor: zomp

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

Am I affected?

Timeline

2025-12-15 21:15 UTCPublished CVE record published
2026-06-17 06:46 UTCUpdated Record last modified

zomp zomplog DOWNGRADE

Affected: 3.9

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.9

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 3.9 (Debian / Ubuntu)

apt-cache madison zomplog sudo apt install zomplog=<VERSION_BEFORE_3.9> sudo apt-mark hold zomplog

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

dnf --showduplicates list zomplog sudo dnf downgrade zomplog-<VERSION_BEFORE_3.9> sudo dnf versionlock add zomplog

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-2023-53888?

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

Is CVE-2023-53888 being exploited?

CVE-2023-53888 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-2023-53888 affect?

CVE-2023-53888 affects zomplog. Severity is high (CVSS 8.8). Zomplog 3.9 contains a remote code execution vulnerability that allows authenticated attackers to inject and execute arbitrary PHP code through file manipulation endpoints. Attackers can upload files (such as JavaScript) and rename them to

How urgent is CVE-2023-53888?

Priority 51/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2023-53887 MEDIUM 5.4 DOWNGRADE Zomplog 3.9 contains a cross-site scripting vulnerability that allows authenticated users to inject malicious

References

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