CVE Catalog

CVE-2026-44742

High
Published: Translated: NVD NIST

Summary

Postorius through 1.3.13 does not escape HTML in the message subject when rendering it in the Held messages pop-up, as exploited in the wild in May 2026.

Risk Assessment

The lack of proper escaping may lead to XSS attacks, posing a risk of account takeover or data theft.

Recommendation

It is recommended to update Postorius to the latest version to mitigate this vulnerability and implement additional security measures against XSS attacks.

Related vulnerabilities

Original NVD description (English source)

Postorius through 1.3.13 does not escape HTML in the message subject when rendering it in the Held messages pop-up, as exploited in the wild in May 2026.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS