# joserfc (PyPI) vulnerabilities Source: https://junglewise.ai/threats/technologies/pypi-joserfc Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Updated: 13 November 2026, 03:07 UTC. Rebuilt every hour. Data: https://junglewise.ai/threats/technologies/pypi-joserfc.json License: CC BY 4.0 with a link back Junglewise Threat Intelligence has tracked 6 vulnerabilities in joserfc (PyPI): 0 in the last 7 days and 2 in the last 90 days, 1 of them critical and 0 exploited in the wild. The most recent, CVE-2026-119284, was published on 29 October 2026. 2 vulnerabilities in the last four weeks, up from none in the four before. ## Counts - Last 7 days: 0 - Last 30 days: 2 - Last 90 days: 2 - All time: 6 (1 critical, 0 exploited in the wild) ## About joserfc (PyPI) Python library for JOSE (JSON Object Signing and Encryption) standards implementation and JWT handling. ## Latest joserfc (PyPI) vulnerabilities - [CVE-2026-119284: joserfc memory exhaustion in compact JWS deserialization](https://junglewise.ai/threats/cve-2026-119284-joserfc-is-a-python-library-that-provides-an-implementation-of) (medium, CVSS 4, published 29 Oct 2026) - [CVE-2026-119283: joserfc JWE denial of service via unlimited recipients](https://junglewise.ai/threats/cve-2026-119283-joserfc-is-a-python-library-that-provides-an-implementation-of) (high, CVSS 7.5, published 29 Oct 2026) - [CVE-2026-49852: authlib joserfc authentication bypass via empty HMAC key](https://junglewise.ai/threats/cve-2026-49852-authlib-joserfc-authentication-bypass-via-empty-hmac-key) (high, CVSS 4, published 17 Jul 2026) - [CVE-2026-27932: PYSEC-2026-2529 - joserfc's PBES2 p2c Unbounded Iteration Count enables Denial of Service (DoS)](https://junglewise.ai/threats/cve-2026-27932-joserfc-s-pbes2-p2c-unbounded-iteration-count-enables-denial-of) (low, CVSS 3.1, published 13 Jul 2026) - [CVE-2026-48990: authlib joserfc resource exhaustion via oversized RFC7797 payloads](https://junglewise.ai/threats/cve-2026-48990-authlib-joserfc-resource-exhaustion-via-oversized-rfc7797) (medium, CVSS 5.3, published 17 Jun 2026) - [CVE-2025-65015: joserfc has Possible Uncontrolled Resource Consumption Vulnerability Triggered by Logging Arbitrarily Large JWT Token…](https://junglewise.ai/threats/cve-2025-65015-joserfc-has-possible-uncontrolled-resource-consumption) (critical, CVSS 7.5, published 18 Nov 2025) ## Most severe joserfc (PyPI) vulnerabilities - [CVE-2025-65015: joserfc has Possible Uncontrolled Resource Consumption Vulnerability Triggered by Logging Arbitrarily Large JWT Token…](https://junglewise.ai/threats/cve-2025-65015-joserfc-has-possible-uncontrolled-resource-consumption) (critical, CVSS 7.5, published 18 Nov 2025) - [CVE-2026-119283: joserfc JWE denial of service via unlimited recipients](https://junglewise.ai/threats/cve-2026-119283-joserfc-is-a-python-library-that-provides-an-implementation-of) (high, CVSS 7.5, published 29 Oct 2026) - [CVE-2026-49852: authlib joserfc authentication bypass via empty HMAC key](https://junglewise.ai/threats/cve-2026-49852-authlib-joserfc-authentication-bypass-via-empty-hmac-key) (high, CVSS 4, published 17 Jul 2026) - [CVE-2026-48990: authlib joserfc resource exhaustion via oversized RFC7797 payloads](https://junglewise.ai/threats/cve-2026-48990-authlib-joserfc-resource-exhaustion-via-oversized-rfc7797) (medium, CVSS 5.3, published 17 Jun 2026) - [CVE-2026-119284: joserfc memory exhaustion in compact JWS deserialization](https://junglewise.ai/threats/cve-2026-119284-joserfc-is-a-python-library-that-provides-an-implementation-of) (medium, CVSS 4, published 29 Oct 2026) - [CVE-2026-27932: PYSEC-2026-2529 - joserfc's PBES2 p2c Unbounded Iteration Count enables Denial of Service (DoS)](https://junglewise.ai/threats/cve-2026-27932-joserfc-s-pbes2-p2c-unbounded-iteration-count-enables-denial-of) (low, CVSS 3.1, published 13 Jul 2026) ## Vulnerabilities per week 2 vulnerabilities in the last four weeks, up from none in the four before. | Week of | Vulns | Critical | Exploited | | --- | --- | --- | --- | | 17 Aug 2026 | 0 | 0 | 0 | | 24 Aug 2026 | 0 | 0 | 0 | | 31 Aug 2026 | 0 | 0 | 0 | | 7 Sep 2026 | 0 | 0 | 0 | | 14 Sep 2026 | 0 | 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 | 2 | 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, "joserfc (PyPI) vulnerabilities", https://junglewise.ai/threats/technologies/pypi-joserfc, 13 November 2026.