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

Routine

MEDIUM 5.4DOWNGRADE

CVE-2023-53887 is a medium-severity flaw (CVSS 5.4) 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 cross-site scripting vulnerability that allows authenticated users to inject malicious scripts when creating new pages. Attackers can craft malicious image source and onerror attributes to execute arbitrary JavaScript code in victim's browser.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.2% (top 84%)
CISA exploited list	No
Weakness	CWE-79
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-2023-53887?

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

Is CVE-2023-53887 being exploited?

CVE-2023-53887 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-2023-53887 affect?

CVE-2023-53887 affects zomplog. Severity is medium (CVSS 5.4). Zomplog 3.9 contains a cross-site scripting vulnerability that allows authenticated users to inject malicious scripts when creating new pages. Attackers can craft malicious image source and onerror attributes to execute arbitrary JavaScript

How urgent is CVE-2023-53887?

Priority 28/100. Public exploit reference

Related CVEs

CVE-2023-53888 HIGH 8.8 DOWNGRADE Zomplog 3.9 contains a remote code execution vulnerability that allows authenticated attackers to inject and e

References

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