CVE-2017-2123: Cross-site scripting vulnerability in OneThird CMS v1.73 Heaven's Door and earlier allows remote attackers to

Q: How do I fix CVE-2017-2123?

onethird cms: upgrade to newer than 1.7.3. Exact commands for each OS are on this page.

Q: Is CVE-2017-2123 being exploited?

CVE-2017-2123 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2017-2123 affect?

CVE-2017-2123 affects onethird cms. Severity is medium (CVSS 6.1). Cross-site scripting vulnerability in OneThird CMS v1.73 Heaven's Door and earlier allows remote attackers to inject arbitrary web script or HTML via language.php.

Q: How urgent is CVE-2017-2123?

Priority 38/100. No elevated risk signals yet.

Routine

MEDIUM 6.1UPGRADE

CVE-2017-2123 is a medium-severity flaw (CVSS 6.1) affecting onethird cms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting vulnerability in OneThird CMS v1.73 Heaven's Door and earlier allows remote attackers to inject arbitrary web script or HTML via language.php.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.2% (top 32%)
CISA exploited list	No
Weakness	CWE-79
Published	2017-04-28
Last modified	2026-06-17

Publisher (CNA): JPCERT/CC · Vendor: onethird

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

Am I affected?

Timeline

2017-04-28 16:59 UTCPublished CVE record published
2026-06-17 01:15 UTCUpdated Record last modified

onethird onethird cms UPGRADE

Affected: <= 1.7.3

Fixed in: newer than 1.7.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy onethird-cms || rpm -q onethird-cms || onethird-cms --version

2. UPGRADE to newer than 1.7.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade onethird-cms

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade onethird-cms

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2017-2123?

onethird cms: upgrade to newer than 1.7.3. Exact commands for each OS are on this page.

Is CVE-2017-2123 being exploited?

CVE-2017-2123 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-2017-2123 affect?

CVE-2017-2123 affects onethird cms. Severity is medium (CVSS 6.1). Cross-site scripting vulnerability in OneThird CMS v1.73 Heaven's Door and earlier allows remote attackers to inject arbitrary web script or HTML via language.php.

How urgent is CVE-2017-2123?

Priority 38/100. No elevated risk signals yet.

Software pages

PHP vulnerabilities

Related CVEs

CVE-2017-2124 MEDIUM 6.1 UPGRADE Cross-site scripting vulnerability in OneThird CMS v1.73 Heaven's Door and earlier allows remote attackers to

References

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