{"schema_version":1,"title":"pysaml2 (PyPI) vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 7 vulnerabilities in pysaml2 (PyPI): 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2021-21238, was published on 21 January 2021.","url":"https://junglewise.ai/threats/technologies/pypi-pysaml2","json_url":"https://junglewise.ai/threats/technologies/pypi-pysaml2.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/technologies/pypi-pysaml2","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","counts":{"high":0,"all_time":7,"critical":0,"exploited":0,"last_7_days":0,"last_30_days":0,"last_90_days":0,"last_365_days":0},"latest":[{"cve":"CVE-2021-21238","cvss":3.1,"epss":0.0108,"slug":"cve-2021-21238-saml-xml-signature-wrapping-in-pysaml2","title":"PYSEC-2021-48 - PySAML2 is a pure python implementation of SAML Version 2 Standard. PySAML2 before 6.5.0 has an improper verification of cryptographic signa","severity":"low","exploited":false,"published_at":"2021-01-21T15:15:00+00:00","url":"https://junglewise.ai/threats/cve-2021-21238-saml-xml-signature-wrapping-in-pysaml2"},{"cve":"CVE-2021-21239","cvss":3.1,"epss":0.0127,"slug":"cve-2021-21239-improper-verification-of-cryptographic-signature-in-pysaml2","title":"PYSEC-2021-49 - PySAML2 is a pure python implementation of SAML Version 2 Standard. PySAML2 before 6.5.0 has an improper verification of cryptographic signa","severity":"low","exploited":false,"published_at":"2021-01-21T15:15:00+00:00","url":"https://junglewise.ai/threats/cve-2021-21239-improper-verification-of-cryptographic-signature-in-pysaml2"},{"cve":"CVE-2020-5390","cvss":3.1,"epss":0.0122,"slug":"cve-2020-5390-improper-verification-of-cryptographic-signature-in-pysaml2","title":"PYSEC-2020-94 - PySAML2 before 5.0.0 does not check that the signature in a SAML document is enveloped and thus signature wrapping is effective, i.e., it is","severity":"low","exploited":false,"published_at":"2020-01-13T19:15:00+00:00","url":"https://junglewise.ai/threats/cve-2020-5390-improper-verification-of-cryptographic-signature-in-pysaml2"},{"cve":"CVE-2017-1000433","cvss":3.1,"epss":0.0254,"slug":"cve-2017-1000433-pysaml2-improper-authentication-vulnerability","title":"PYSEC-2018-48 - pysaml2 version 4.4.0 and older accept any password when run with python optimizations enabled. This allows attackers to log in as any user","severity":"low","exploited":false,"published_at":"2018-01-02T23:29:00+00:00","url":"https://junglewise.ai/threats/cve-2017-1000433-pysaml2-improper-authentication-vulnerability"},{"cve":"CVE-2017-1000246","cvss":3,"epss":0.0091,"slug":"cve-2017-1000246-pysaml2-improperly-initializes-encryption-vector","title":"PYSEC-2017-26 - Python package pysaml2 version 4.4.0 and earlier reuses the initialization vector across encryptions in the IDP server, resulting in weak en","severity":"low","exploited":false,"published_at":"2017-11-17T04:29:00+00:00","url":"https://junglewise.ai/threats/cve-2017-1000246-pysaml2-improperly-initializes-encryption-vector"},{"cve":"CVE-2016-10149","cvss":3,"epss":0.0502,"slug":"cve-2016-10149-pysaml2-does-not-sanitize-xml-responses","title":"PYSEC-2017-25 - XML External Entity (XXE) vulnerability in PySAML2 4.4.0 and earlier allows remote attackers to read arbitrary files via a crafted SAML XML","severity":"low","exploited":false,"published_at":"2017-03-24T14:59:00+00:00","url":"https://junglewise.ai/threats/cve-2016-10149-pysaml2-does-not-sanitize-xml-responses"},{"cve":"CVE-2016-10127","cvss":3,"epss":0.0213,"slug":"cve-2016-10127-pysaml2-xml-external-entity-attack","title":"PYSEC-2017-67 - PySAML2 allows remote attackers to conduct XML external entity (XXE) attacks via a crafted SAML XML request or response.","severity":"low","exploited":false,"published_at":"2017-03-03T15:59:00+00:00","url":"https://junglewise.ai/threats/cve-2016-10127-pysaml2-xml-external-entity-attack"}],"weekly":[{"week":"2026-07-06","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-13","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-20","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-27","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-03","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-10","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-28","critical":0,"exploited":0,"vulnerabilities":0}],"related":[{"name":"tensorflow (PyPI)","slug":"pypi-tensorflow","vulnerabilities":428,"url":"https://junglewise.ai/threats/technologies/pypi-tensorflow"},{"name":"tensorflow-cpu (PyPI)","slug":"tensorflow-cpu","vulnerabilities":424,"url":"https://junglewise.ai/threats/technologies/tensorflow-cpu"},{"name":"tensorflow-gpu (PyPI)","slug":"tensorflow-gpu","vulnerabilities":421,"url":"https://junglewise.ai/threats/technologies/tensorflow-gpu"},{"name":"open-webui (PyPI)","slug":"open-webui","vulnerabilities":177,"url":"https://junglewise.ai/threats/technologies/open-webui"},{"name":"Django (PyPI)","slug":"django","vulnerabilities":172,"url":"https://junglewise.ai/threats/technologies/django"},{"name":"apache-airflow (PyPI)","slug":"apache-airflow","vulnerabilities":152,"url":"https://junglewise.ai/threats/technologies/apache-airflow"},{"name":"plone (PyPI)","slug":"pypi-plone","vulnerabilities":101,"url":"https://junglewise.ai/threats/technologies/pypi-plone"},{"name":"praisonai (PyPI)","slug":"pypi-praisonai","vulnerabilities":86,"url":"https://junglewise.ai/threats/technologies/pypi-praisonai"},{"name":"exiv2 (PyPI)","slug":"exiv2","vulnerabilities":85,"url":"https://junglewise.ai/threats/technologies/exiv2"},{"name":"nltk (PyPI)","slug":"nltk","vulnerabilities":83,"url":"https://junglewise.ai/threats/technologies/nltk"},{"name":"mlflow (PyPI)","slug":"mlflow","vulnerabilities":82,"url":"https://junglewise.ai/threats/technologies/mlflow"},{"name":"pillow (PyPI)","slug":"pillow","vulnerabilities":79,"url":"https://junglewise.ai/threats/technologies/pillow"}],"technology":{"hub":true,"name":"pysaml2 (PyPI)","slug":"pypi-pysaml2","vendor":{"name":"PyPI","slug":"pypi","url":"https://junglewise.ai/threats/vendors/pypi"},"aliases":[],"description":"Python library implementing SAML 2.0 for Single Sign-On and federated identity management.","url":"https://junglewise.ai/threats/technologies/pypi-pysaml2"},"most_severe":[{"cve":"CVE-2017-1000433","cvss":3.1,"epss":0.0254,"slug":"cve-2017-1000433-pysaml2-improper-authentication-vulnerability","title":"PYSEC-2018-48 - pysaml2 version 4.4.0 and older accept any password when run with python optimizations enabled. This allows attackers to log in as any user","severity":"low","exploited":false,"published_at":"2018-01-02T23:29:00+00:00","url":"https://junglewise.ai/threats/cve-2017-1000433-pysaml2-improper-authentication-vulnerability"},{"cve":"CVE-2021-21239","cvss":3.1,"epss":0.0127,"slug":"cve-2021-21239-improper-verification-of-cryptographic-signature-in-pysaml2","title":"PYSEC-2021-49 - PySAML2 is a pure python implementation of SAML Version 2 Standard. PySAML2 before 6.5.0 has an improper verification of cryptographic signa","severity":"low","exploited":false,"published_at":"2021-01-21T15:15:00+00:00","url":"https://junglewise.ai/threats/cve-2021-21239-improper-verification-of-cryptographic-signature-in-pysaml2"},{"cve":"CVE-2020-5390","cvss":3.1,"epss":0.0122,"slug":"cve-2020-5390-improper-verification-of-cryptographic-signature-in-pysaml2","title":"PYSEC-2020-94 - PySAML2 before 5.0.0 does not check that the signature in a SAML document is enveloped and thus signature wrapping is effective, i.e., it is","severity":"low","exploited":false,"published_at":"2020-01-13T19:15:00+00:00","url":"https://junglewise.ai/threats/cve-2020-5390-improper-verification-of-cryptographic-signature-in-pysaml2"},{"cve":"CVE-2021-21238","cvss":3.1,"epss":0.0108,"slug":"cve-2021-21238-saml-xml-signature-wrapping-in-pysaml2","title":"PYSEC-2021-48 - PySAML2 is a pure python implementation of SAML Version 2 Standard. PySAML2 before 6.5.0 has an improper verification of cryptographic signa","severity":"low","exploited":false,"published_at":"2021-01-21T15:15:00+00:00","url":"https://junglewise.ai/threats/cve-2021-21238-saml-xml-signature-wrapping-in-pysaml2"},{"cve":"CVE-2016-10149","cvss":3,"epss":0.0502,"slug":"cve-2016-10149-pysaml2-does-not-sanitize-xml-responses","title":"PYSEC-2017-25 - XML External Entity (XXE) vulnerability in PySAML2 4.4.0 and earlier allows remote attackers to read arbitrary files via a crafted SAML XML","severity":"low","exploited":false,"published_at":"2017-03-24T14:59:00+00:00","url":"https://junglewise.ai/threats/cve-2016-10149-pysaml2-does-not-sanitize-xml-responses"},{"cve":"CVE-2016-10127","cvss":3,"epss":0.0213,"slug":"cve-2016-10127-pysaml2-xml-external-entity-attack","title":"PYSEC-2017-67 - PySAML2 allows remote attackers to conduct XML external entity (XXE) attacks via a crafted SAML XML request or response.","severity":"low","exploited":false,"published_at":"2017-03-03T15:59:00+00:00","url":"https://junglewise.ai/threats/cve-2016-10127-pysaml2-xml-external-entity-attack"},{"cve":"CVE-2017-1000246","cvss":3,"epss":0.0091,"slug":"cve-2017-1000246-pysaml2-improperly-initializes-encryption-vector","title":"PYSEC-2017-26 - Python package pysaml2 version 4.4.0 and earlier reuses the initialization vector across encryptions in the IDP server, resulting in weak en","severity":"low","exploited":false,"published_at":"2017-11-17T04:29:00+00:00","url":"https://junglewise.ai/threats/cve-2017-1000246-pysaml2-improperly-initializes-encryption-vector"}],"generated_at":"2026-09-28T03:07:00.154823+00:00"}