CVE-2023-40816: OpenCRX version 5.2.0 is vulnerable to HTML injection via Activity Milestone Name Field.

Routine

MEDIUM 6.1DOWNGRADE

CVE-2023-40816 is a medium-severity flaw (CVSS 6.1) affecting opencrx. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

OpenCRX version 5.2.0 is vulnerable to HTML injection via Activity Milestone Name Field.

Why this priority

Public exploit reference

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	0.5% (top 60%)
CISA exploited list	No
Weakness	CWE-79
Published	2023-11-18
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: opencrx

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

Am I affected?

Timeline

2023-11-18 04:15 UTCPublished CVE record published
2026-06-17 06:19 UTCUpdated Record last modified

opencrx opencrx DOWNGRADE

Affected: 5.2.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.2.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 5.2.0 (Debian / Ubuntu)

apt-cache madison opencrx sudo apt install opencrx=<VERSION_BEFORE_5.2.0> sudo apt-mark hold opencrx

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

dnf --showduplicates list opencrx sudo dnf downgrade opencrx-<VERSION_BEFORE_5.2.0> sudo dnf versionlock add opencrx

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-2023-40816?

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

Is CVE-2023-40816 being exploited?

CVE-2023-40816 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-2023-40816 affect?

CVE-2023-40816 affects opencrx. Severity is medium (CVSS 6.1). OpenCRX version 5.2.0 is vulnerable to HTML injection via Activity Milestone Name Field.

How urgent is CVE-2023-40816?

Priority 36/100. Public exploit reference

Related CVEs

CVE-2023-46502 CRITICAL 9.8 DOWNGRADE An issue in openCRX v.5.2.2 allows a remote attacker to read internal files and execute server side request fo
CVE-2023-40817 MEDIUM 6.1 DOWNGRADE OpenCRX version 5.2.0 is vulnerable to HTML injection via the Product Configuration Name Field.
CVE-2023-40815 MEDIUM 6.1 DOWNGRADE OpenCRX version 5.2.0 is vulnerable to HTML injection via the Category Creation Name Field.
CVE-2023-40814 MEDIUM 6.1 DOWNGRADE OpenCRX version 5.2.0 is vulnerable to HTML injection via the Accounts Name Field.
CVE-2023-40813 MEDIUM 6.1 DOWNGRADE OpenCRX version 5.2.0 is vulnerable to HTML injection via Activity Saved Search Creation.

References

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