CVE-2020-11807

Name: CVE-2020-11807
Creator: NVD / NIST
Published: 2020-05-19T16:15:11.167+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.65%

Last modified Jun 17, 2026

CVE-2020-11807 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Because of Unrestricted Upload of a File with a Dangerous Type, Sourcefabric Newscoop 4.4.7 allows an authenticated user to execute arbitrary PHP code (and sometimes terminal commands) on a server by making an avatar update and then visiting the avatar file under the /images/ path.. EPSS estimates a 0.65% chance of exploitation in the next 30 days.

Description

Because of Unrestricted Upload of a File with a Dangerous Type, Sourcefabric Newscoop 4.4.7 allows an authenticated user to execute arbitrary PHP code (and sometimes terminal commands) on a server by making an avatar update and then visiting the avatar file under the /images/ path.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.65%

46.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-434

Affected Software

Vendor	Product	Versions
Sourcefabric	Newscoop	4.4.7

References

https://gist.github.com/V-Rico/82e9e52ac451dc20eef87b0999b3b1eeExploit, Third Party Advisory
https://github.com/sourcefabric/Newscoop/blob/3df835637609a5a42530b2a4611177c634ad6274/newscoop/library/Newscoop/Image/ImageService.php#L226Patch, Third Party Advisory
https://gist.github.com/V-Rico/82e9e52ac451dc20eef87b0999b3b1eeExploit, Third Party Advisory
https://github.com/sourcefabric/Newscoop/blob/3df835637609a5a42530b2a4611177c634ad6274/newscoop/library/Newscoop/Image/ImageService.php#L226Patch, Third Party Advisory

Timeline

Published: May 19, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-11807?

How severe is CVE-2020-11807?

CVE-2020-11807 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.65% probability of exploitation in the next 30 days.

How do I fix CVE-2020-11807?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-11807?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST