CVE-2025-0953: The SMTP for Sendinblue – YaySMTP plugin for WordPress is vulnerable to Stored Cross-Site Scripting in version

Q: How do I fix CVE-2025-0953?

yaysmtp: upgrade to 1.2. Exact commands for each OS are on this page.

Q: Is CVE-2025-0953 being exploited?

CVE-2025-0953 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-2025-0953 affect?

CVE-2025-0953 affects yaysmtp. Severity is high (CVSS 7.2). The SMTP for Sendinblue – YaySMTP plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 1.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated

Q: How urgent is CVE-2025-0953?

Priority 38/100. High severity; Remotely exploitable, no login, no user action

Routine

HIGH 7.2REMOTEUPGRADE

CVE-2025-0953 is a high-severity flaw (CVSS 7.2) affecting yaysmtp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The SMTP for Sendinblue – YaySMTP plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 1.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 70%)
CISA exploited list	No
Weakness	CWE-79
Published	2025-02-22
Last modified	2026-06-17

Publisher (CNA): Wordfence · Vendor: yaycommerce

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

Am I affected?

Timeline

2025-02-22 13:15 UTCPublished CVE record published
2026-06-17 08:27 UTCUpdated Record last modified

yaycommerce yaysmtp UPGRADE

Affected: < 1.2

Fixed in: 1.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy yaysmtp || rpm -q yaysmtp || yaysmtp --version

2. UPGRADE to 1.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade yaysmtp

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade yaysmtp

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-2025-0953?

yaysmtp: upgrade to 1.2. Exact commands for each OS are on this page.

Is CVE-2025-0953 being exploited?

CVE-2025-0953 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-2025-0953 affect?

CVE-2025-0953 affects yaysmtp. Severity is high (CVSS 7.2). The SMTP for Sendinblue – YaySMTP plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 1.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated

How urgent is CVE-2025-0953?

Priority 38/100. High severity; Remotely exploitable, no login, no user action

Software pages

WordPress vulnerabilities

Related CVEs

CVE-2025-0918 HIGH 7.2 UPGRADE The SMTP for SendGrid – YaySMTP plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions

References

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