CVE-2024-13521: The MailUp Auto Subscription plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions

Q: How do I fix CVE-2024-13521?

mailup auto subscription: upgrade to 1.2.0. Exact commands for each OS are on this page.

Q: Is CVE-2024-13521 being exploited?

CVE-2024-13521 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2024-13521 affect?

CVE-2024-13521 affects mailup auto subscription. Severity is medium (CVSS 6.1). The MailUp Auto Subscription plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.1.0. This is due to missing or incorrect nonce validation on the mas_options function. This makes it possi

Q: How urgent is CVE-2024-13521?

Priority 22/100. No elevated risk signals yet.

Routine

MEDIUM 6.1UPGRADE

CVE-2024-13521 is a medium-severity flaw (CVSS 6.1) affecting mailup auto subscription. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The MailUp Auto Subscription plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.1.0. This is due to missing or incorrect nonce validation on the mas_options function. This makes it possible for unauthenticated attackers to update settings and inject malicious web scripts via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.1% (top 97%)
CISA exploited list	No
Weakness	CWE-352
Published	2025-01-28
Last modified	2026-06-17

Publisher (CNA): Wordfence · Vendor: ilghera

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-01-28 08:15 UTCPublished CVE record published
2026-06-17 07:02 UTCUpdated Record last modified

ilghera mailup auto subscription UPGRADE

Affected: < 1.2.0

Fixed in: 1.2.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy mailup-auto-subscription || rpm -q mailup-auto-subscription || mailup-auto-subscription --version

2. UPGRADE to 1.2.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade mailup-auto-subscription

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade mailup-auto-subscription

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-13521?

mailup auto subscription: upgrade to 1.2.0. Exact commands for each OS are on this page.

Is CVE-2024-13521 being exploited?

CVE-2024-13521 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-13521 affect?

CVE-2024-13521 affects mailup auto subscription. Severity is medium (CVSS 6.1). The MailUp Auto Subscription plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.1.0. This is due to missing or incorrect nonce validation on the mas_options function. This makes it possi

How urgent is CVE-2024-13521?

Priority 22/100. No elevated risk signals yet.

Software pages

WordPress vulnerabilities

References

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