# jwcrypto (PyPI) vulnerabilities Source: https://junglewise.ai/threats/technologies/jwcrypto Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Updated: 13 November 2026, 03:07 UTC. Rebuilt every hour. Data: https://junglewise.ai/threats/technologies/jwcrypto.json License: CC BY 4.0 with a link back Junglewise Threat Intelligence has tracked 8 vulnerabilities in jwcrypto (PyPI): 0 in the last 7 days and 3 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-92091, was published on 16 September 2026. Nothing in the last four weeks, down from 1 vulnerability in the four before. ## Counts - Last 7 days: 0 - Last 30 days: 0 - Last 90 days: 3 - All time: 8 (0 critical, 0 exploited in the wild) ## About jwcrypto (PyPI) A Python implementation of JOSE (JSON Object Signing and Encryption) standards. ## Latest jwcrypto (PyPI) vulnerabilities - [CVE-2026-92091: jwcrypto JWK.import_key denial of service via O(n²) complexity](https://junglewise.ai/threats/cve-2026-92091-jwcrypto-jwk-import-key-denial-of-service-via-o-n-complexity) (medium, CVSS 5.9, published 16 Sep 2026) - [CVE-2026-84185: python-jwcrypto key ID binding bypass in JWS verification](https://junglewise.ai/threats/cve-2026-84185-python-jwcrypto-key-id-binding-bypass-in-jws-verification) (medium, CVSS 5.9, published 3 Sep 2026) - [CVE-2026-80179: jwcrypto denial of service via malformed JWE tokens](https://junglewise.ai/threats/cve-2026-80179-jwcrypto-denial-of-service-via-malformed-jwe-tokens) (medium, CVSS 5.9, published 28 Aug 2026) - [CVE-2024-28102: PYSEC-2026-1484 - JWCrypto vulnerable to JWT bomb Attack in `deserialize` function](https://junglewise.ai/threats/cve-2024-28102-jwcrypto-vulnerable-to-jwt-bomb-attack-in-deserialize-function) (low, CVSS 3.1, published 7 Jul 2026) - [CVE-2022-3102: PYSEC-2026-827 - jwcrypto token substitution can lead to authentication bypass](https://junglewise.ai/threats/cve-2022-3102-jwcrypto-token-substitution-can-lead-to-authentication-bypass) (info, published 7 Jul 2026) - [CVE-2026-39373: Latchset JWCrypto denial of service via memory exhaustion in JWE decompression](https://junglewise.ai/threats/cve-2026-39373-latchset-jwcrypto-denial-of-service-via-memory-exhaustion-in-jwe) (medium, CVSS 5.3, published 7 Apr 2026) - [CVE-2023-6681: DoS with algorithms that use PBKDF2 due to unbounded PBES2 Count value](https://junglewise.ai/threats/cve-2023-6681-dos-with-algorithms-that-use-pbkdf2-due-to-unbounded-pbes2-count) (low, CVSS 3.1, published 12 Feb 2024) - [CVE-2016-6298: jwcrypto lacks the Random Filling protection mechanism](https://junglewise.ai/threats/cve-2016-6298-jwcrypto-lacks-the-random-filling-protection-mechanism) (low, CVSS 3, published 1 Sep 2016) ## Most severe jwcrypto (PyPI) vulnerabilities - [CVE-2026-92091: jwcrypto JWK.import_key denial of service via O(n²) complexity](https://junglewise.ai/threats/cve-2026-92091-jwcrypto-jwk-import-key-denial-of-service-via-o-n-complexity) (medium, CVSS 5.9, published 16 Sep 2026) - [CVE-2026-80179: jwcrypto denial of service via malformed JWE tokens](https://junglewise.ai/threats/cve-2026-80179-jwcrypto-denial-of-service-via-malformed-jwe-tokens) (medium, CVSS 5.9, published 28 Aug 2026) - [CVE-2026-84185: python-jwcrypto key ID binding bypass in JWS verification](https://junglewise.ai/threats/cve-2026-84185-python-jwcrypto-key-id-binding-bypass-in-jws-verification) (medium, CVSS 5.9, published 3 Sep 2026) - [CVE-2026-39373: Latchset JWCrypto denial of service via memory exhaustion in JWE decompression](https://junglewise.ai/threats/cve-2026-39373-latchset-jwcrypto-denial-of-service-via-memory-exhaustion-in-jwe) (medium, CVSS 5.3, published 7 Apr 2026) - [CVE-2024-28102: PYSEC-2026-1484 - JWCrypto vulnerable to JWT bomb Attack in `deserialize` function](https://junglewise.ai/threats/cve-2024-28102-jwcrypto-vulnerable-to-jwt-bomb-attack-in-deserialize-function) (low, CVSS 3.1, published 7 Jul 2026) - [CVE-2023-6681: DoS with algorithms that use PBKDF2 due to unbounded PBES2 Count value](https://junglewise.ai/threats/cve-2023-6681-dos-with-algorithms-that-use-pbkdf2-due-to-unbounded-pbes2-count) (low, CVSS 3.1, published 12 Feb 2024) - [CVE-2016-6298: jwcrypto lacks the Random Filling protection mechanism](https://junglewise.ai/threats/cve-2016-6298-jwcrypto-lacks-the-random-filling-protection-mechanism) (low, CVSS 3, published 1 Sep 2016) - [CVE-2022-3102: PYSEC-2026-827 - jwcrypto token substitution can lead to authentication bypass](https://junglewise.ai/threats/cve-2022-3102-jwcrypto-token-substitution-can-lead-to-authentication-bypass) (info, published 7 Jul 2026) ## Vulnerabilities per week Nothing in the last four weeks, down from 1 vulnerability in the four before. | Week of | Vulns | Critical | Exploited | | --- | --- | --- | --- | | 17 Aug 2026 | 0 | 0 | 0 | | 24 Aug 2026 | 1 | 0 | 0 | | 31 Aug 2026 | 1 | 0 | 0 | | 7 Sep 2026 | 0 | 0 | 0 | | 14 Sep 2026 | 1 | 0 | 0 | | 21 Sep 2026 | 0 | 0 | 0 | | 28 Sep 2026 | 0 | 0 | 0 | | 5 Oct 2026 | 0 | 0 | 0 | | 12 Oct 2026 | 0 | 0 | 0 | | 19 Oct 2026 | 0 | 0 | 0 | | 26 Oct 2026 | 0 | 0 | 0 | | 2 Nov 2026 | 0 | 0 | 0 | | 9 Nov 2026 | 0 | 0 | 0 | ## Other PyPI technologies - [tensorflow (PyPI)](https://junglewise.ai/threats/technologies/pypi-tensorflow): 435 vulnerabilities - [tensorflow-cpu (PyPI)](https://junglewise.ai/threats/technologies/tensorflow-cpu): 430 vulnerabilities - [tensorflow-gpu (PyPI)](https://junglewise.ai/threats/technologies/tensorflow-gpu): 427 vulnerabilities - [open-webui (PyPI)](https://junglewise.ai/threats/technologies/open-webui): 177 vulnerabilities - [Django (PyPI)](https://junglewise.ai/threats/technologies/django): 173 vulnerabilities - [apache-airflow (PyPI)](https://junglewise.ai/threats/technologies/apache-airflow): 159 vulnerabilities - [pillow (PyPI)](https://junglewise.ai/threats/technologies/pillow): 125 vulnerabilities - [praisonai (PyPI)](https://junglewise.ai/threats/technologies/pypi-praisonai): 120 vulnerabilities - [vllm (PyPI)](https://junglewise.ai/threats/technologies/pypi-vllm): 117 vulnerabilities - [plone (PyPI)](https://junglewise.ai/threats/technologies/pypi-plone): 101 vulnerabilities - [mlflow (PyPI)](https://junglewise.ai/threats/technologies/mlflow): 88 vulnerabilities - [picklescan (PyPI)](https://junglewise.ai/threats/technologies/picklescan): 86 vulnerabilities ## Sources NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "jwcrypto (PyPI) vulnerabilities", https://junglewise.ai/threats/technologies/jwcrypto, 13 November 2026.