HOMEVULNERABILITIESCVE-2020-8966
MEDIUM

CVE-2020-8966

CWE-80Published: April 1, 2020· Updated: Jun 17, 2026

6.1
CVSS v3.1

Official Description

There is an Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in php webpages of Tiki-Wiki Groupware. Tiki-Wiki CMS all versions through 20.0 allows malicious users to cause the injection of malicious code fragments (scripts) into a legitimate web page.

NVD Source

Technical Analysis

CVE-2020-8966 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeChanged
Impact
ConfidentialityLow
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected Vendors & Products

tiki1 product(s)
tikiwiki cms\/groupware
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
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://sourceforge.net/p/tikiwiki/code/75455
PATCHhttps://sourceforge.net/p/tikiwiki/code/75455
ADVISORYhttps://www.incibe-cert.es/en/early-warning/security-advisories/cross-site-scripting-xss-flaws-found-tiki-wiki-cms-software
ADVISORYhttps://www.incibe-cert.es/en/early-warning/security-advisories/cross-site-scripting-xss-flaws-found-tiki-wiki-cms-software

All References (4)

→
https://sourceforge.net/p/tikiwiki/code/75455Patch
→
https://www.incibe-cert.es/en/early-warning/security-advisories/cross-site-scripting-xss-flaws-found-tiki-wiki-cms-softwareThird Party Advisory
→
https://sourceforge.net/p/tikiwiki/code/75455Patch
→
https://www.incibe-cert.es/en/early-warning/security-advisories/cross-site-scripting-xss-flaws-found-tiki-wiki-cms-softwareThird Party Advisory

Quick Facts

CVE IDCVE-2020-8966
CVSS Score6.1 / 10
SeverityMEDIUM
WeaknessCWE-80
CISA KEVNo
Affected1 vendor(s)
PublishedApr 1, 2020

Related CVEs (CWE-80)

CVE-2023-39216
9.8
CVE-2019-13923
9.6
CVE-2025-53883
9.3
CVE-2024-52300
9.0
CVE-2021-27915
9.0
CVE-2022-25620
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Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-8966 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.COM. CVE data is provided under the NVD usage policy.
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