pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.5, binary REAL decoding builds a large mantissa one octet at a time by shifting a growing integer and slicing the remaining byte string. Attacker-controlled ASN.1 includes a binary-encoded REAL with a large mantissa and r...
Product
redhat/python3.11-pyasn1 vulnerabilities
6 published CVES affecting redhat/python3.11-pyasn1, from public sources (CVE.org, NVD, CISA KEV, FIRST EPSS, OSV).
- Total
- 6
- Critical
- 0
- High
- 6
- Medium
- 0
- Low
- 0
- Unscored
- 0
- CISA KEV
- 0
Latest redhat/python3.11-pyasn1 CVEs
Newest publication first
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HighCVSS 7.5 EPSS 0.43%
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HighCVSS 7.5 EPSS 0.43%
pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.5, constructed BIT STRING decoding repeatedly shifts and copies the complete bit value accumulated from earlier fragments. Attacker-controlled BER or CER input contains many constructed BIT STRING fragments; schema-driven...
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HighCVSS 7.5 EPSS 0.53%
pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.5, constructed string and indefinite-length ANY decoding repeatedly concatenates each fragment onto a growing bytes value. Attacker-controlled BER or CER data can use many constructed OCTET STRING or character-string frag...
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HighCVSS 7.5 EPSS 0.43%
pyasn1 is a generic ASN.1 library for Python. From 0.3.3 until 0.6.5, schemaless container decoding stores every decoded component's TagSet in a growing set even though only one-versus-multiple tag types must be distinguished. Attacker-controlled BER, CER, or DER input contains m...
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CVE-2026-59886 pyasn1: Uncontrolled resource consumption when converting decoded REAL values
PublishedHighCVSS 7.5 EPSS 0.44%pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.4, the univ.Real type converted its mantissa, base, and exponent value to a Python float using exact big-integer exponentiation. A BER, CER, or DER encoded REAL value only a few bytes long can carry a very large exponent,...
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HighCVSS 7.5 EPSS 0.76%
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 with excessive continuation octets. This vulnerability is fixed in 0.6.2.
Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.