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NVD / CVE Program· CNA mitre

CVE-2020-28977: The Canto plugin 1.3.0 for WordPress contains blind SSRF vulnerability.

Noroxi assessment

Priority: Monitor (action score 26/100)

  • Public proof-of-concept code exists (Exploit-DB); there is no record of exploitation in the wild.
  • Probability of exploitation in the next 30 days: 15.4% (FIRST EPSS); higher than 96.8% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to the record, no fixed version is available yet.

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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/get.php?subdomain=SSRF.

MediumCVSS 5.3 · v3.1—Proof of concept No fix recorded
Published
Nov 30, 2020
Updated
Jun 16, 2026
EPSS
15.4% · 96th percentile

Report tools

JSON

Action score

26

Monitor

Low priority for now.

CVSS
21 / 40 · 5.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
5 / 30 · 15.4%

Is Canto on your site?

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Is Canto on your site?

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
cantocanto

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • canto canto1.3.0

Same product

canto: all records

Other highest-scoring records for the same primary product.

  • CVE-2023-3452Canto <= 3.0.4 - Unauthenticated Remote File Inclusion
    41Plan
  • CVE-2024-4936Canto <= 3.0.8 - Unauthenticated Remote File Inclusion
    39Monitor
  • CVE-2024-25096WordPress canto plugin <= 3.0.7 - Unauth. Remote Code Execution (RCE) vulnerability
    39Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2020-24063Nov 10, 2020 · The Canto plugin 1.3.0 for WordPress allows includes/lib/download.php?subdomain= SSRF.
    28Monitor
  • ← EarlierCVE-2020-28976Nov 30, 2020 · The Canto plugin 1.3.0 for WordPress contains a blind SSRF vulnerability.
    29Monitor
  • Later →CVE-2020-28978Nov 30, 2020 · The Canto plugin 1.3.0 for WordPress contains blind SSRF vulnerability.
    26Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

  • Exploit-DB entry ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Exploit-DB entrywebapps2020-12-04

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Published
  2. First PoC+4 d
  3. TodayNov 4, 2026+2165 d

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
low · data can be read
Integrity
none
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
Low
Integrity impact
None
Availability impact
None

Weakness class (CWE)

CWE-918 · Server-Side Request Forgery (SSRF)

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Show all references (4 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records