HOMEVULNERABILITIESCVE-2020-11807
HIGH

CVE-2020-11807

CWE-434Published: May 19, 2020· Updated: Jun 17, 2026

7.8
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2020-11807 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

sourcefabric1 product(s)
newscoop
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
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Official Patches & Advisories

PATCHhttps://github.com/sourcefabric/Newscoop/blob/3df835637609a5a42530b2a4611177c634ad6274/newscoop/library/Newscoop/Image/ImageService.php#L226
PATCHhttps://github.com/sourcefabric/Newscoop/blob/3df835637609a5a42530b2a4611177c634ad6274/newscoop/library/Newscoop/Image/ImageService.php#L226
ADVISORYhttps://gist.github.com/V-Rico/82e9e52ac451dc20eef87b0999b3b1ee
ADVISORYhttps://gist.github.com/V-Rico/82e9e52ac451dc20eef87b0999b3b1ee

All References (4)

→
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

Quick Facts

CVE IDCVE-2020-11807
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-434
CISA KEVNo
Affected1 vendor(s)
PublishedMay 19, 2020

Related CVEs (CWE-434)

CVE-2026-61424
10.0
CVE-2024-52375
10.0
CVE-2026-61900
10.0
CVE-2025-6327
10.0
CVE-2019-7257
10.0
CVE-2024-52373
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-11807 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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