CVE-2013-5963: Unrestricted file upload vulnerability in multi.php in Simple Dropbox Upload plugin before 1.8.8.1 for WordPre

Q: How do I fix CVE-2013-5963?

simple dropbox upload form: upgrade to newer than 1.8.8. Exact commands for each OS are on this page.

Q: Is CVE-2013-5963 being exploited?

CVE-2013-5963 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-2013-5963 affect?

CVE-2013-5963 affects simple dropbox upload form. Severity is medium (CVSS 6.8). Unrestricted file upload vulnerability in multi.php in Simple Dropbox Upload plugin before 1.8.8.1 for WordPress allows remote attackers to execute arbitrary code by uploading a file with an executable extension, then accessing it via a dir

Q: How urgent is CVE-2013-5963?

Priority 52/100. EPSS top 9%: very likely to be exploited; Public exploit reference

This month

MEDIUM 6.8UPGRADE

CVE-2013-5963 is a medium-severity flaw (CVSS 6.8) affecting simple dropbox upload form. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Unrestricted file upload vulnerability in multi.php in Simple Dropbox Upload plugin before 1.8.8.1 for WordPress allows remote attackers to execute arbitrary code by uploading a file with an executable extension, then accessing it via a direct request to the file in wp-content/uploads/wpdb/.

Why this priority

EPSS top 9%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.8 (Medium)
EPSS exploit chance	4.2% (top 9%)
CISA exploited list	No
Published	2013-09-30
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: cdsincdesign

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

Am I affected?

Timeline

2013-09-30 22:55 UTCPublished CVE record published
2026-06-16 23:59 UTCUpdated Record last modified

cdsincdesign simple dropbox upload form UPGRADE

Affected: <= 1.8.8 · 0.5.0 · 1.0.0 · 1.1.0 · 1.1.1 · 1.1.2 · 1.2.0 · 1.3.0

Fixed in: newer than 1.8.8

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy simple-dropbox-upload-form || rpm -q simple-dropbox-upload-form || simple-dropbox-upload-form --version

2. UPGRADE to newer than 1.8.8 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade simple-dropbox-upload-form

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade simple-dropbox-upload-form

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-2013-5963?

simple dropbox upload form: upgrade to newer than 1.8.8. Exact commands for each OS are on this page.

Is CVE-2013-5963 being exploited?

CVE-2013-5963 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-2013-5963 affect?

CVE-2013-5963 affects simple dropbox upload form. Severity is medium (CVSS 6.8). Unrestricted file upload vulnerability in multi.php in Simple Dropbox Upload plugin before 1.8.8.1 for WordPress allows remote attackers to execute arbitrary code by uploading a file with an executable extension, then accessing it via a dir

How urgent is CVE-2013-5963?

Priority 52/100. EPSS top 9%: very likely to be exploited; Public exploit reference

Software pages

WordPress vulnerabilities · PHP vulnerabilities · Dropbox vulnerabilities

References

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