# Phpseclib vulnerabilities

Source: https://junglewise.ai/threats/technologies/phpseclib  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/phpseclib.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 4 vulnerabilities in Phpseclib: 0 in the last 7 days and 1 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-84308, was published on 1 September 2026. Nothing was published in the last eight weeks.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 1
- All time: 4 (0 critical, 0 exploited in the wild)

## About Phpseclib

phpseclib is a PHP library providing cryptographic operations including RSA, AES, and other algorithms.

## Latest Phpseclib vulnerabilities

- [CVE-2026-84308: phpseclib X25519 non-constant-time scalar multiplication private key recovery](https://junglewise.ai/threats/cve-2026-84308-phpseclib-x25519-non-constant-time-scalar-multiplication-private) (medium, CVSS 6.3, published 1 Sep 2026)
- [CVE-2026-55599: phpseclib SSRF in X.509 certificate validation](https://junglewise.ai/threats/cve-2026-55599-phpseclib-ssrf-in-x-509-certificate-validation) (medium, CVSS 5.8, published 22 Jun 2026)
- [CVE-2026-44167: phpseclib denial of service via OID amplification in ASN1 decoding](https://junglewise.ai/threats/cve-2026-44167-phpseclib-oid-amplification-dos-in-asn1-decodeoid) (high, CVSS 7.5, published 12 May 2026)
- [CVE-2026-40194: phpseclib timing discrepancy in SSH2 HMAC verification](https://junglewise.ai/threats/cve-2026-40194-phpseclib-timing-discrepancy-in-ssh2-hmac-verification) (low, CVSS 3.7, published 10 Apr 2026)

## Most severe Phpseclib vulnerabilities

- [CVE-2026-44167: phpseclib denial of service via OID amplification in ASN1 decoding](https://junglewise.ai/threats/cve-2026-44167-phpseclib-oid-amplification-dos-in-asn1-decodeoid) (high, CVSS 7.5, published 12 May 2026)
- [CVE-2026-84308: phpseclib X25519 non-constant-time scalar multiplication private key recovery](https://junglewise.ai/threats/cve-2026-84308-phpseclib-x25519-non-constant-time-scalar-multiplication-private) (medium, CVSS 6.3, published 1 Sep 2026)
- [CVE-2026-55599: phpseclib SSRF in X.509 certificate validation](https://junglewise.ai/threats/cve-2026-55599-phpseclib-ssrf-in-x-509-certificate-validation) (medium, CVSS 5.8, published 22 Jun 2026)
- [CVE-2026-40194: phpseclib timing discrepancy in SSH2 HMAC verification](https://junglewise.ai/threats/cve-2026-40194-phpseclib-timing-discrepancy-in-ssh2-hmac-verification) (low, CVSS 3.7, published 10 Apr 2026)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 1 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Phpseclib vulnerabilities", https://junglewise.ai/threats/technologies/phpseclib, 9 November 2026.