CVE-2023-27560: phpseclib Infinite Loop vulnerability

high Affects phpseclib/phpseclib. Feed 2026.10.29.1, updated 2026-10-28; published 2023-03-03; advisory modified 2025-03-06.

phpseclib Infinite Loop vulnerability

Package: phpseclib/phpseclib Composer
Affected versions: >=3.0.0 and <3.0.19
Fixed in: 3.0.19
Severity: high CVSS 7.5
Exploitation: not on CISA KEV · EPSS 1% (56.7th percentile)
Published: 2023-03-03
Source: osv.dev

References

CWE-835

NVD record phpseclib/phpseclib 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.

# PHP projects (recommended)
composer require --dev phpwarden/phpwarden
# then
vendor/bin/phpwarden deps composer.lock

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

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