CVE-2014-4663: TimThumb 2.8.13 and WordThumb 1.07, when Webshot (aka Webshots) is enabled, allows remote attackers to execute

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MEDIUM 6.8DOWNGRADEDOWNGRADE

CVE-2014-4663 is a medium-severity flaw (CVSS 6.8) affecting timthumb, wordthumb. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

TimThumb 2.8.13 and WordThumb 1.07, when Webshot (aka Webshots) is enabled, allows remote attackers to execute arbitrary commands via shell metacharacters in the src parameter.

Why this priority

EPSS top 4%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	6.8 (Medium)
EPSS exploit chance	9.8% (top 4%)
CISA exploited list	No
Weakness	CWE-94
Published	2014-07-15
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: binarymoon

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

Am I affected?

Timeline

2014-07-15 14:55 UTCPublished CVE record published
2026-06-17 00:10 UTCUpdated Record last modified

binarymoon timthumb DOWNGRADE

Affected: 2.8.13

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.8.13

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.8.13 (Debian / Ubuntu)

apt-cache madison timthumb sudo apt install timthumb=<VERSION_BEFORE_2.8.13> sudo apt-mark hold timthumb

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

dnf --showduplicates list timthumb sudo dnf downgrade timthumb-<VERSION_BEFORE_2.8.13> sudo dnf versionlock add timthumb

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.

binarymoon wordthumb DOWNGRADE

Affected: 1.07

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.07

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.07 (Debian / Ubuntu)

apt-cache madison wordthumb sudo apt install wordthumb=<VERSION_BEFORE_1.07> sudo apt-mark hold wordthumb

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

dnf --showduplicates list wordthumb sudo dnf downgrade wordthumb-<VERSION_BEFORE_1.07> sudo dnf versionlock add wordthumb

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: Multiple WordPress Plugins (TimThumb 2.8.13 / WordThumb 1.07) - 'WebShot' Remote Code Execution

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-2014-4663?

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

Is CVE-2014-4663 being exploited?

CVE-2014-4663 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-2014-4663 affect?

CVE-2014-4663 affects timthumb, wordthumb. Severity is medium (CVSS 6.8). TimThumb 2.8.13 and WordThumb 1.07, when Webshot (aka Webshots) is enabled, allows remote attackers to execute arbitrary commands via shell metacharacters in the src parameter.

How urgent is CVE-2014-4663?

Priority 53/100. EPSS top 4%: very likely to be exploited; Public exploit reference

Related CVEs

CVE-2011-4106 MEDIUM 6.8 UPGRADE TimThumb (timthumb.php) before 2.0 does not validate the entire source with the domain white list, which allow
CVE-2010-5303 MEDIUM 4.3 UPGRADE Cross-site scripting (XSS) vulnerability in the displayError function in timthumb.php in TimThumb before 1.15
CVE-2010-5302 MEDIUM 4.3 UPGRADE Cross-site scripting (XSS) vulnerability in timthumb.php in TimThumb before 1.15 as of 20100908 (r88), as used
CVE-2009-5142 MEDIUM 4.3 UPGRADE DOWNGRADE Cross-site scripting (XSS) vulnerability in timthumb.php in TimThumb 1.09 and earlier, as used in Mimbo Pro 2.

References

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