CVE-2022-38545: Valine v1.4.18 was discovered to contain a remote code execution (RCE) vulnerability which allows attackers to

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CRITICAL 9.6DOWNGRADE

CVE-2022-38545 is a critical-severity flaw (CVSS 9.6) affecting valine. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Valine v1.4.18 was discovered to contain a remote code execution (RCE) vulnerability which allows attackers to execute arbitrary code via a crafted POST request.

Why this priority

Critical severity
EPSS top 2%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	9.6 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	34.1% (top 2%)
CISA exploited list	No
Weakness	CWE-79
Published	2022-09-19
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: valine.js

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

Am I affected?

Timeline

2022-09-19 23:15 UTCPublished CVE record published
2026-06-17 04:56 UTCUpdated Record last modified

valine.js valine DOWNGRADE

Affected: 1.4.18

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.4.18

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.4.18 (Debian / Ubuntu)

apt-cache madison valine sudo apt install valine=<VERSION_BEFORE_1.4.18> sudo apt-mark hold valine

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

dnf --showduplicates list valine sudo dnf downgrade valine-<VERSION_BEFORE_1.4.18> sudo dnf versionlock add valine

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-2022-38545?

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

Is CVE-2022-38545 being exploited?

CVE-2022-38545 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-2022-38545 affect?

CVE-2022-38545 affects valine. Severity is critical (CVSS 9.6). Valine v1.4.18 was discovered to contain a remote code execution (RCE) vulnerability which allows attackers to execute arbitrary code via a crafted POST request.

How urgent is CVE-2022-38545?

Priority 63/100. Critical severity; EPSS top 2%: very likely to be exploited; Public exploit reference

Related CVEs

CVE-2021-34801 MEDIUM 5.3 DOWNGRADE Valine 1.4.14 allows remote attackers to cause a denial of service (application outage) by supplying a ua (aka
CVE-2020-28847 MEDIUM 5.4 DOWNGRADE Cross Site Scripting (XSS) vulnerability in xCss Valine v1.4.14 via the nick parameter to /classes/Comment.

References

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