CVE-2026-43863

LOW

Published May 4, 2026 Modified May 5, 2026 CWE-253

Description

mutt before 2.3.2 has an infinite loop in data_object_to_stream in crypt-gpgme.c.

CVSS v3.1 Score

3.7

LOW

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS — Exploit Prediction

0.0004

Probability of exploitation

0.14%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-253 CWE-253

References

Other References

https://github.com/muttmua/mutt/commit/fdc04a171777327218a1e78db504926c388b48c4

Frequently Asked Questions

What is CVE-2026-43863? +

mutt before 2.3.2 has an infinite loop in data_object_to_stream in crypt-gpgme.c. It has a CVSS v3.1 base score of 3.7 (LOW).

How severe is CVE-2026-43863? +

CVE-2026-43863 has a CVSS v3.1 score of 3.7 out of 10, rated LOW. This is a low-severity vulnerability with limited impact. The EPSS score is 0.0004, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-43863? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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