CVE-2013-4899: Cross-site scripting (XSS) vulnerability in Twilight CMS 5.17 and possibly earlier allows remote attackers to

Q: How do I fix CVE-2013-4899?

twilight cms: upgrade to newer than 5.17. Exact commands for each OS are on this page.

Q: Is CVE-2013-4899 being exploited?

CVE-2013-4899 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-2013-4899 affect?

CVE-2013-4899 affects twilight cms. Severity is medium (CVSS 4.3). Cross-site scripting (XSS) vulnerability in Twilight CMS 5.17 and possibly earlier allows remote attackers to inject arbitrary web script or HTML via the PATH_INFO to the gallery/ page.

Q: How urgent is CVE-2013-4899?

Priority 37/100. Public exploit reference

Routine

MEDIUM 4.3UPGRADE

CVE-2013-4899 is a medium-severity flaw (CVSS 4.3) affecting twilight cms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) vulnerability in Twilight CMS 5.17 and possibly earlier allows remote attackers to inject arbitrary web script or HTML via the PATH_INFO to the gallery/ page.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	1.2% (top 32%)
CISA exploited list	No
Weakness	CWE-79
Published	2013-09-09
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: twilightcms

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2013-09-09 17:55 UTCPublished CVE record published
2026-06-16 23:58 UTCUpdated Record last modified

twilightcms twilight cms UPGRADE

Affected: <= 5.17

Fixed in: newer than 5.17

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 5.17 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade twilight-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-2013-4899?

twilight cms: upgrade to newer than 5.17. Exact commands for each OS are on this page.

Is CVE-2013-4899 being exploited?

CVE-2013-4899 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-2013-4899 affect?

CVE-2013-4899 affects twilight cms. Severity is medium (CVSS 4.3). Cross-site scripting (XSS) vulnerability in Twilight CMS 5.17 and possibly earlier allows remote attackers to inject arbitrary web script or HTML via the PATH_INFO to the gallery/ page.

How urgent is CVE-2013-4899?

Priority 37/100. Public exploit reference

Related CVEs

CVE-2013-4900 MEDIUM 5.0 DOWNGRADE Directory traversal vulnerability in DeWeS web server 0.4.2 and possibly earlier, as used in Twilight CMS, all

References

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