# CVE-2020-5780: Missing authorization in Icegram Email Subscribers & Newsletters Plugin for WordPress

> Unauthenticated attackers can forge emails via the Icegram Email Subscribers plugin due to missing authentication on critical functions.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 10 Sep 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-j25r-mrm6-h8pw

## What is CVE-2020-5780?

CVE-2020-5780 is a medium-severity missing authorization vulnerability in Icegram Email Subscribers & Newsletters Plugin for WordPress, published on 10 Sep 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official 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.

Weakness: CWE-306 (Missing Authentication for Critical Functionality)

## Which versions are affected by CVE-2020-5780?

It affects 1 product.


Products: Icegram Email Subscribers \& Newsletters.

## How do I fix CVE-2020-5780?

No fix has been published for CVE-2020-5780 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-5780 being exploited?

There is no known exploitation of CVE-2020-5780 in the wild and no public exploit code.

## Other vulnerabilities in Icegram Email Subscribers & Newsletters Plugin for WordPress

- [CVE-2024-6172](https://insights.sbomify.com/CVE-2024-6172/): SQL injection in Email Subscribers & Newsletters – Email Marketing, Post Notifications & Newsletter Plugin for WordPress (critical 9.8)
- [CVE-2024-4295](https://insights.sbomify.com/CVE-2024-4295/): Email Subscribers by Icegram Express <= 5.7.20 - Unauthenticated SQL Injection via hash (critical 9.8)
- [CVE-2019-13569](https://insights.sbomify.com/CVE-2019-13569/): SQL injection in n/a (critical 9.8)
- [CVE-2022-3981](https://insights.sbomify.com/CVE-2022-3981/): Icegram Express < 5.5.1 - Subscriber+ SQLi (high 8.8)
- [CVE-2022-0439](https://insights.sbomify.com/CVE-2022-0439/): Email Subscribers & Newsletters < 5.3.2 - Subscriber+ Blind SQL injection (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-5780 and fix it if it is affected.

What it is: CVE-2020-5780 is a medium-severity missing authorization vulnerability in Icegram Email Subscribers & Newsletters Plugin for WordPress, published on 10 Sep 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-5780 in the wild and no public exploit code.

Affected product: Icegram Email Subscribers & Newsletters Plugin for WordPress. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2020-5780/ (Markdown: https://insights.sbomify.com/CVE-2020-5780/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-5780
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-5780
- OSV: https://osv.dev/vulnerability/CVE-2020-5780

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-5780/
Summaries are generated and may contain mistakes; the official description above is the record.