CVE-2026-44167: phpseclib has a CVE-2024-27355 mitigation bypass — OID amplification DoS in ASN1::decodeOID()

May 5, 2026 (updated May 13, 2026)

Anyone loading untrusted ASN1 files (eg. X509 certificates, RSA PKCS8 private or public keys, etc)

References

github.com/advisories/GHSA-3qpq-r242-jqj7
github.com/phpseclib/phpseclib/commit/d53d2021bcb9f6a04d5d44ec99e6bbef219a71bc
github.com/phpseclib/phpseclib/security/advisories/GHSA-3qpq-r242-jqj7
nvd.nist.gov/vuln/detail/CVE-2026-44167

Code Behaviors & Features

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