What’s Vulnerable › Vulnerabilities

CVE-2023-49316

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-11-27 · updated 2026-06-17
• Weakness: CWE-834

Description

In Math/BinaryField.php in phpseclib 3 before 3.0.34, excessively large degrees can lead to a denial of service.

Affected products

• phpseclib: from 3.0.0 before 3.0.34 — fixed in 3.0.34

How to fix

Upgrade to a fixed version: phpseclib 3.0.34. Check the vendor advisory for mitigations.

References

• https://github.com/phpseclib/phpseclib/commit/964d78101a70305df33f442f5490f0adb3b7e77f
• https://github.com/phpseclib/phpseclib/releases/tag/3.0.34
• https://github.com/phpseclib/phpseclib/commit/964d78101a70305df33f442f5490f0adb3b7e77f
• https://github.com/phpseclib/phpseclib/releases/tag/3.0.34

Get alerted when CVE-2023-49316 or the next vulnerability affects your stack