HOMEVULNERABILITIESCVE-2020-28978
MEDIUMPOC

CVE-2020-28978

CWE-918Published: November 30, 2020· Updated: Jun 17, 2026

5.3
CVSS v3.1

Official Description

The Canto plugin 1.3.0 for WordPress contains blind SSRF vulnerability. It allows an unauthenticated attacker can make a request to any internal and external server via /includes/lib/tree.php?subdomain=SSRF.

NVD Source

Technical Analysis

CVE-2020-28978 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A proof-of-concept (PoC) exploit exists for CVE-2020-28978. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected Vendors & Products

canto1 product(s)
canto
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

POC AVAILABLEProof-of-concept code exists
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

ADVISORYhttp://packetstormsecurity.com/files/160358/WordPress-Canto-1.3.0-Server-Side-Request-Forgery.html
ADVISORYhttps://gist.github.com/p4nk4jv/87aebd999ce4b28063943480e95fd9e0
ADVISORYhttp://packetstormsecurity.com/files/160358/WordPress-Canto-1.3.0-Server-Side-Request-Forgery.html
ADVISORYhttps://gist.github.com/p4nk4jv/87aebd999ce4b28063943480e95fd9e0

All References (10)

→
http://packetstormsecurity.com/files/160358/WordPress-Canto-1.3.0-Server-Side-Request-Forgery.htmlThird Party Advisory · VDB Entry
→
https://gist.github.com/p4nk4jv/87aebd999ce4b28063943480e95fd9e0Third Party Advisory
→
https://github.com/CantoDAM/Canto-Wordpress-PluginProduct
→
https://wordpress.org/plugins/canto/#developersRelease Notes
→
https://www.canto.com/integrations/wordpress/Product
→
http://packetstormsecurity.com/files/160358/WordPress-Canto-1.3.0-Server-Side-Request-Forgery.htmlThird Party Advisory · VDB Entry
→
https://gist.github.com/p4nk4jv/87aebd999ce4b28063943480e95fd9e0Third Party Advisory
→
https://github.com/CantoDAM/Canto-Wordpress-PluginProduct
→
https://wordpress.org/plugins/canto/#developersRelease Notes
→
https://www.canto.com/integrations/wordpress/Product

Quick Facts

CVE IDCVE-2020-28978
CVSS Score5.3 / 10
SeverityMEDIUM
WeaknessCWE-918
CISA KEVNo
ExploitPOC
Affected1 vendor(s)
PublishedNov 30, 2020

Related CVEs (CWE-918)

CVE-2026-47938
10.0
CVE-2026-26150
10.0
CVE-2026-2053
10.0
CVE-2025-2828
10.0
CVE-2024-42467
10.0
CVE-2026-13773
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-28978 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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