CVE-2026-61816: zbateson/mail-mime-parser has uncontrolled resource consumption (CPU/memory DoS) parsing untrusted MIME

high Affects zbateson/mail-mime-parser. Feed 2026.10.29.1, updated 2026-10-28; published 2026-09-24.

zbateson/mail-mime-parser has uncontrolled resource consumption (CPU/memory DoS) parsing untrusted MIME

Package: zbateson/mail-mime-parser Composer
Affected versions: >=2.0.0 and <3.0.6 or >=4.0.0 and <4.0.2
Fixed in: 3.0.6, 4.0.2
Severity: high CVSS 7.5
Exploitation: not on CISA KEV · EPSS 0% (33.4th percentile)
Published: 2026-09-24
Source: osv.dev

References

NVD record zbateson/mail-mime-parser advisories

Am I affected?

Find out in one command. phpwarden checks your composer.lock against this advisory and 20,000+ others, ranked by real-world exploitation (CISA KEV + EPSS). Free, offline, open data.

# one-time install
pip install phpwarden

# then
phpwarden deps composer.lock

Or keep it checked automatically: GitHub Action · pre-commit hook · GitLab CI · Laravel artisan command

Install docs How findings are ranked

Related advisories

CVE-2026-61815 high zbateson/mail-mime-parser has CRLF header injection via attachment filename same package: zbateson/mail-mime-parser
CVE-2018-6389 high In WordPress through 4.9.2, unauthenticated attackers can cause a denial of service (resou same weakness: CWE-400
CVE-2013-4701 high PHP OpenID Library Denial of Service vulnerability same weakness: CWE-400
CVE-2016-5706 high phpMyAdmin Denial Of Service (DOS) attack same weakness: CWE-400
CVE-2006-6017 medium WordPress before 2.0.5 does not properly store a profile containing a string representatio same weakness: CWE-400
CVE-2019-12473 high Wikimedia Potential DOS due to slow WatchedItemStore::countVisitingWatchersMultiple same weakness: CWE-400