StackPrism

PyPI package

cryptography 1.5.2 vulnerabilities, and the version that fixes all of them

cryptography 1.5.2 has 12 known vulnerabilities (6 rated high or critical); 49.0.0 fixes all of them. 49.0.0 has 1 known vulnerability of its own, so upgrade to 50.0.2, which has none.

PyPI (opens in a new tab) describes it as “cryptography is a package which provides cryptographic recipes and primitives to Python developers.”

Known vulnerabilities
12
6 rated high or critical
Released
Sep 26, 2016
Latest is 50.0.2
Licence
Apache-2.0 OR BSD-3-Clause
OpenSSF Scorecard
8.3/10
pyca/cryptography (opens in a new tab)
Dependencies
None
Resolved by deps.dev

What to upgrade to

50.0.2 is the closest release with no known vulnerabilities that we checked.

  • 1.9.0

    Newest 1.x release. Released May 30, 2017.

    14 known vulnerabilities, worst rated warning

  • 49.0.0

    Fixes all 12 known vulnerabilities. Released Jun 12, 2026.

    1 known vulnerability, worst rated warning

  • 50.0.2Upgrade to this

    Latest release. Released Sep 30, 2026.

    No known vulnerabilities

50.0.2 came out on Sep 30, 2026. A coding agent trained before then doesn’t know it exists, so it may suggest an older release. AI knowledge cutoff dates

Hand the fix to your coding agent

One task with the upgrade, the file to change and why. Paste it into Claude Code, Cursor or Codex.

Findings

Every advisory for cryptography 1.5.2

Known exploited first (CISA KEV), then by how likely they are to be exploited (FIRST EPSS), then by severity. Each id links to its OSV.dev record.

  1. CriticalCVE-2023-0286 on OSV.dev (opens in a new tab)GHSA-x4qr-2fvf-3mr5EPSS: top 1%

    Vulnerable OpenSSL included in cryptography wheels

    Fixed in 39.0.1. Published Feb 8, 2023.

  2. CriticalCVE-2016-9243 on OSV.dev (opens in a new tab)GHSA-q3cj-2r34-2cwcEPSS: top 12%

    Improper input validation in cryptography

    Fixed in 1.5.3. Published May 17, 2022.

  3. WarningCVE-2024-0727 on OSV.dev (opens in a new tab)GHSA-9v9h-cgj8-h64pEPSS: top 13%

    Null pointer dereference in PKCS12 parsing

    Fixed in 42.0.2. Published Jan 26, 2024.

  4. CriticalCVE-2020-25659 on OSV.dev (opens in a new tab)GHSA-hggm-jpg3-v476EPSS: top 16%

    RSA decryption vulnerable to Bleichenbacher timing vulnerability

    Fixed in 3.2. Published Oct 27, 2020.

  5. CriticalCVE-2023-50782 on OSV.dev (opens in a new tab)GHSA-3ww4-gg4f-jr7fEPSS: top 35%

    Python Cryptography package vulnerable to Bleichenbacher timing oracle attack

    Fixed in 42.0.0. Published Feb 5, 2024.

  6. CriticalCVE-2026-26007 on OSV.dev (opens in a new tab)GHSA-r6ph-v2qm-q3c2EPSS: top 69%

    cryptography Vulnerable to a Subgroup Attack Due to Missing Subgroup Validation for SECT Curves

    Fixed in 46.0.5. Published Feb 10, 2026.

  7. WarningCVE-2026-69249 on OSV.dev (opens in a new tab)GHSA-jwv3-5hgf-82wwEPSS: top 85%

    python-cryptography: Duplicate self-signed intermediates can cause exponential path-building

    Fixed in 49.0.0. Published Aug 4, 2026.

  8. WarningCVE-2026-69248 on OSV.dev (opens in a new tab)GHSA-m2h6-j472-rp4cEPSS: top 86%

    python-cryptography verifier accepts wildcard DNS names allowing escape from permittedSubtrees

    Fixed in 49.0.0. Published Aug 4, 2026.

  9. LowCVE-2026-34073 on OSV.dev (opens in a new tab)GHSA-m959-cc7f-wv43EPSS: top 93%

    cryptography has incomplete DNS name constraint enforcement on peer names

    Fixed in 46.0.6. Published Mar 27, 2026.

  10. CriticalGHSA-537c-gmf6-5ccf on OSV.dev (opens in a new tab)

    Vulnerable OpenSSL included in cryptography wheels

    Fixed in 48.0.1. Published Jun 15, 2026.

  11. LowGHSA-jm77-qphf-c4w8 on OSV.dev (opens in a new tab)

    pyca/cryptography's wheels include vulnerable OpenSSL

    Fixed in 41.0.3. Published Aug 1, 2023.

  12. LowGHSA-5cpq-8wj7-hf2v on OSV.dev (opens in a new tab)

    Vulnerable OpenSSL included in cryptography wheels

    Fixed in 41.0.0. Published Jun 2, 2023.

Is cryptography the only one?

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How this page is checked

StackPrism asks OSV.dev which advisories affect exactly cryptography 1.5.2, merges duplicates filed under several ids, and ranks them with CISA’s Known Exploited Vulnerabilities list and FIRST EPSS. Release dates and deprecation come from deps.dev and PyPI. No AI writes this page: every sentence comes from that data, refreshed every few hours.

Last checked against PyPI, OSV.dev, deps.dev, CISA KEV and FIRST EPSS.