How severe is CVE-2020-5780?

CVE-2020-5780 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2020-5780 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-5780?

CVE-2020-5780 affects Icegram Email Subscribers & Newsletters. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-5780?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-5780 published?

CVE-2020-5780 was published on 2020-09-10 and last updated on 2026-06-17.

CVE-2020-5780

CVE-2020-5780 is a medium-severity vulnerability in Icegram Email Subscribers & Newsletters with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-306.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-306
Affected product: Icegram Email Subscribers & Newsletters
Published: 2020-09-10
Last modified: 2026-06-17

Description

Missing Authentication for Critical Function in Icegram Email Subscribers & Newsletters Plugin for WordPress prior to version 4.5.6 allows a remote, unauthenticated attacker to conduct unauthenticated email forgery/spoofing.

Frequently asked questions

What is CVE-2020-5780?: Missing Authentication for Critical Function in Icegram Email Subscribers & Newsletters Plugin for WordPress prior to version 4.5.6 allows a remote, unauthenticated attacker to conduct unauthenticated email forgery/spoofing.
How severe is CVE-2020-5780?: CVE-2020-5780 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2020-5780 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-5780?: CVE-2020-5780 affects Icegram Email Subscribers & Newsletters. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-5780?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-5780 published?: CVE-2020-5780 was published on 2020-09-10 and last updated on 2026-06-17.

References

https://www.tenable.com/security/research/tra-2020-53

Affected products (1)

cpe:2.3:a:icegram:email_subscribers_\&_newsletters:*:*:*:*:*:wordpress:*:*

More vulnerabilities in Icegram Email Subscribers & Newsletters

CVE-2024-6172 — Critical (CVSS 9.8): The Email Subscribers by Icegram Express – Email Marketing, Newsletters, Automation for WordPress & WooCommerce…
CVE-2024-4295 — Critical (CVSS 9.8): The Email Subscribers by Icegram Express plugin for WordPress is vulnerable to SQL Injection via the ‘hash’…
CVE-2019-20361 — Critical (CVSS 9.8): There was a flaw in the WordPress plugin, Email Subscribers & Newsletters before 4.3.1, that allowed SQL statements to…
CVE-2019-13569 — Critical (CVSS 9.8): A SQL injection vulnerability exists in the Icegram Email Subscribers & Newsletters plugin through 4.1.7 for WordPress.…
CVE-2022-3981 — High (CVSS 8.8): The Icegram Express WordPress plugin before 5.5.1 does not properly sanitise and escape a parameter before using it in…
CVE-2022-0439 — High (CVSS 8.8): The Email Subscribers & Newsletters WordPress plugin before 5.3.2 does not correctly escape the `order` and `orderby`…

All CVEs affecting Icegram Email Subscribers & Newsletters →

Other CWE-306 (Missing Authentication for Critical Function) vulnerabilities

CVE-2026-54309 — Critical (CVSS 10.0): n8n is an open source workflow automation platform. Prior to 2.25.7 and 2.26.2, when @n8n/mcp-browser is run in HTTP…
CVE-2026-50242 — Critical (CVSS 10.0): In JetBrains Hub before 2026.1.13757, 2025.3.148033, 2025.2.148048, 2025.1.148120, 2024.3.148430, 2024.2.148429…
CVE-2026-49257 — Critical (CVSS 10.0): mcp-pinot is a Python-based Model Context Protocol (MCP) server for interacting with Apache Pinot. In versions 3.0.1…
CVE-2026-46846 — Critical (CVSS 10.0): Vulnerability in the Oracle WebCenter Portal product of Oracle Fusion Middleware (component: Security Framework).…
CVE-2026-46803 — Critical (CVSS 10.0): Vulnerability in the Oracle WebCenter Portal product of Oracle Fusion Middleware (component: Security Framework).…
CVE-2026-46800 — Critical (CVSS 10.0): Vulnerability in the Oracle WebCenter Sites product of Oracle Fusion Middleware (component: WebCenter Sites).…

Browse all CWE-306 (Missing Authentication for Critical Function) vulnerabilities →