CVE-2018-0534: Cross-site scripting vulnerability in ArsenoL Version 0.5 allows an attacker to inject arbitrary web script or

Routine

MEDIUM 6.1DOWNGRADE

CVE-2018-0534 is a medium-severity flaw (CVSS 6.1) affecting arsenol. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting vulnerability in ArsenoL Version 0.5 allows an attacker to inject arbitrary web script or HTML via unspecified vectors.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.7% (top 47%)
CISA exploited list	No
Weakness	CWE-79
Published	2018-03-22
Last modified	2026-06-17

Publisher (CNA): JPCERT/CC · Vendor: arsenol project

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

Am I affected?

Timeline

2018-03-22 13:29 UTCPublished CVE record published
2026-06-17 01:31 UTCUpdated Record last modified

arsenol project arsenol DOWNGRADE

Affected: 0.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.5

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.5 (Debian / Ubuntu)

apt-cache madison arsenol sudo apt install arsenol=<VERSION_BEFORE_0.5> sudo apt-mark hold arsenol

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

dnf --showduplicates list arsenol sudo dnf downgrade arsenol-<VERSION_BEFORE_0.5> sudo dnf versionlock add arsenol

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-2018-0534?

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

Is CVE-2018-0534 being exploited?

CVE-2018-0534 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-2018-0534 affect?

CVE-2018-0534 affects arsenol. Severity is medium (CVSS 6.1). Cross-site scripting vulnerability in ArsenoL Version 0.5 allows an attacker to inject arbitrary web script or HTML via unspecified vectors.

How urgent is CVE-2018-0534?

Priority 35/100. No elevated risk signals yet.

References

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