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

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MEDIUM 5.0DOWNGRADE

CVE-2013-4900 is a medium-severity flaw (CVSS 5.0) affecting twilight cms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Directory traversal vulnerability in DeWeS web server 0.4.2 and possibly earlier, as used in Twilight CMS, allows remote attackers to read arbitrary files via a ..%5c (dot dot encoded backslash) in a GET request.

Why this priority

EPSS top 10%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	3.9% (top 10%)
CISA exploited list	No
Weakness	CWE-22
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 DOWNGRADE

Affected: 5.17

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.17

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 5.17 (Debian / Ubuntu)

apt-cache madison twilight-cms sudo apt install twilight-cms=<VERSION_BEFORE_5.17> sudo apt-mark hold twilight-cms

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

dnf --showduplicates list twilight-cms sudo dnf downgrade twilight-cms-<VERSION_BEFORE_5.17> sudo dnf versionlock add twilight-cms

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Twilight CMS - DeWeS Web Server Directory Traversal
Exploit-DB: DeWeS 0.4.2 - Directory Traversal

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-2013-4900?

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

Is CVE-2013-4900 being exploited?

CVE-2013-4900 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-2013-4900 affect?

CVE-2013-4900 affects twilight cms. Severity is medium (CVSS 5.0). Directory traversal vulnerability in DeWeS web server 0.4.2 and possibly earlier, as used in Twilight CMS, allows remote attackers to read arbitrary files via a ..%5c (dot dot encoded backslash) in a GET request.

How urgent is CVE-2013-4900?

Priority 45/100. EPSS top 10%: very likely to be exploited; Public exploit reference

Related CVEs

CVE-2013-4899 MEDIUM 4.3 UPGRADE Cross-site scripting (XSS) vulnerability in Twilight CMS 5.17 and possibly earlier allows remote attackers to

References

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