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

phpseclib is a PHP secure communications library. Prior to 1.0.29, 2.0.54, and 3.0.52, anyone loading untrusted ASN1 files eg. X509 certificates, RSA PKCS8 private or public keys, etc. This is a bypass of CVE-2024-27355. This vulnerability is fixed in 1.0.29, 2.0.54, and 3.0.52...

GHSA-F2QX-66WF-WVVX phpseclib guardrails needed on OID length

Impact Any application using that loads untrusted ASN1 files eg. X509 certificates, RSA PKCS8 private or public keys, etc. Patches https://github.com/phpseclib/phpseclib/commit/e32531001b4d62c66c3d824ccef54ffad835eb59 Workarounds No. Resources...

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

Impact Anyone loading untrusted ASN1 files eg. X509 certificates, RSA PKCS8 private or public keys, etc Patches https://github.com/phpseclib/phpseclib/commit/d53d2021bcb9f6a04d5d44ec99e6bbef219a71bc Workarounds No. References...

pyasn1: pyasn1: Denial of Service due to memory exhaustion from malformed RELATIVE-OID

A flaw was found in pyasn1, a generic ASN.1 library for Python. A remote attacker could exploit this vulnerability by sending a specially crafted RELATIVE-OID with excessive continuation octets. This input validation vulnerability leads to memory exhaustion, resulting in a Denial of Service DoS f...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: python-pyasn1 (UTSA-2026-014296)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-014296 advisory. pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.2, a Denial-of-Service issue has been found that leads to memory exhaustion from malformed RELATIVE-OID wi...

Exploit for Improper Certificate Validation in Wolfssl

CVE-2026-5194 - Security Vulnerability Quick Usage bas...

Unity Linux 20.1070a Security Update: resource-agents (UTSA-2026-007291)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-007291 advisory. pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.2, a Denial-of-Service issue has been found that leads to memory exhaustion from malformed RELATIVE-OID wi...

Security Bulletin: IBM Watson Speech Services Cartridge is vulnerable to a Denial-of-Service in pyasn1 [CVE-2026-23490]

Summary IBM Watson Speech Services Cartridge is vulnerable to a Denial-of-Service in pyasn1, caused by memory exhaustion from malformed RELATIVE-OID with excessive continuation octets CVE-2026-23490. Pyasn1 is used in our speech service runtimes. This vulnerabilitiy has been addressed. Please rea...

EUVD-2026-21228

A stack buffer overflow exists in wolfSSL's PKCS7 implementation in the wcPKCS7DecryptOri function in wolfcrypt/src/pkcs7.c. When processing a CMS EnvelopedData message containing an OtherRecipientInfo ORI recipient, the function copies an ASN.1-parsed OID into a fixed 32-byte stack buffer...

UBUNTU-CVE-2026-5295

A stack buffer overflow exists in wolfSSL's PKCS7 implementation in the wcPKCS7DecryptOri function in wolfcrypt/src/pkcs7.c. When processing a CMS EnvelopedData message containing an OtherRecipientInfo ORI recipient, the function copies an ASN.1-parsed OID into a fixed 32-byte stack buffer...

CVE-2026-5295

A stack buffer overflow exists in wolfSSL's PKCS7 implementation in the wcPKCS7DecryptOri function in wolfcrypt/src/pkcs7.c. When processing a CMS EnvelopedData message containing an OtherRecipientInfo ORI recipient, the function copies an ASN.1-parsed OID into a fixed 32-byte stack buffer...

CVE-2026-5295

The CVE describes a stack buffer overflow in wolfSSL’s PKCS7 code (wc_PKCS7_DecryptOri() in wolfcrypt/src/pkcs7.c) when handling CMS EnvelopedData with an OtherRecipientInfo (ORI) recipient. A parsed OID longer than 32 bytes is copied into a fixed 32-byte stack buffer (oriOID[MAX_OID_SZ]) without...

Heap-based Buffer Overflow

Overview wolfssl is a None Affected versions of this package are vulnerable to Heap-based Buffer Overflow. via the DecodeObjectId function. An attacker can cause memory corruption or potentially execute arbitrary code by supplying crafted OID data that triggers a heap out-of-bounds write...

CVE-2026-5194

Missing hash/digest size and OID checks allow digests smaller than allowed when verifying ECDSA certificates, or smaller than is appropriate for the relevant key type, to be accepted by signature verification functions. This could lead to reduced security of ECDSA certificate-based authentication...

DEBIAN-CVE-2026-5194

Missing hash/digest size and OID checks allow digests smaller than allowed when verifying ECDSA certificates, or smaller than is appropriate for the relevant key type, to be accepted by signature verification functions. This could lead to reduced security of ECDSA certificate-based authentication...

UBUNTU-CVE-2026-5194

Missing hash/digest size and OID checks allow digests smaller than allowed when verifying ECDSA certificates, or smaller than is appropriate for the relevant key type, to be accepted by signature verification functions. This could lead to reduced security of ECDSA certificate-based authentication...

UBUNTU-CVE-2026-5187

Two potential heap out-of-bounds write locations existed in DecodeObjectId in wolfcrypt/src/asn.c. First, a bounds check only validates one available slot before writing two OID arc values out0 and out1, enabling a 2-byte out-of-bounds write when outSz equals 1. Second, multiple callers pass...

CVE-2026-5187 Heap Out-of-Bounds Write in DecodeObjectId() in wolfSSL

Two potential heap out-of-bounds write locations existed in DecodeObjectId in wolfcrypt/src/asn.c. First, a bounds check only validates one available slot before writing two OID arc values out0 and out1, enabling a 2-byte out-of-bounds write when outSz equals 1. Second, multiple callers pass...

CVE-2026-5187

Two potential heap out-of-bounds write locations existed in DecodeObjectId in wolfcrypt/src/asn.c. First, a bounds check only validates one available slot before writing two OID arc values out0 and out1, enabling a 2-byte out-of-bounds write when outSz equals 1. Second, multiple callers pass...

CVE-2026-5194

The CVE-2026-5194 issue concerns wolfSSL’s ECDSA certificate verification: missing hash/digest size and OID checks may allow digests smaller than allowed for the given key type to pass verification when EdDSA or ML-DSA is enabled. This could reduce security of ECDSA certificate-based authenticati...