Red Hat Security Advisory: python-jwcrypto security update
Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems. Security Fix(es): * JWCrypto: python-cryptography: python: JWCrypto: Memory exhaustion via crafted compressed JWE tokens (CVE-2026-39373) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
AI Analysis
Technical Summary
The vulnerability CVE-2026-39373 in python-jwcrypto allows an attacker to cause memory exhaustion by submitting specially crafted compressed JWE tokens. This can lead to denial of service conditions due to resource exhaustion. Red Hat has released an update for python-jwcrypto in Red Hat Enterprise Linux 9 to fix this issue. The advisory rates the security impact as low and provides updated package versions to remediate the vulnerability.
Potential Impact
The vulnerability can cause memory exhaustion on affected systems when processing crafted compressed JWE tokens, potentially leading to denial of service. The impact is rated as low by Red Hat Product Security.
Mitigation Recommendations
Red Hat has released an official security update for python-jwcrypto in Red Hat Enterprise Linux 9 to fix this vulnerability. Users should apply the update as described in Red Hat advisory RHSA-2026:19197 and the referenced article https://access.redhat.com/articles/11258. No additional mitigation steps are indicated beyond applying the update.
Red Hat Security Advisory: python-jwcrypto security update
Description
Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems. Security Fix(es): * JWCrypto: python-cryptography: python: JWCrypto: Memory exhaustion via crafted compressed JWE tokens (CVE-2026-39373) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2026-39373 in python-jwcrypto allows an attacker to cause memory exhaustion by submitting specially crafted compressed JWE tokens. This can lead to denial of service conditions due to resource exhaustion. Red Hat has released an update for python-jwcrypto in Red Hat Enterprise Linux 9 to fix this issue. The advisory rates the security impact as low and provides updated package versions to remediate the vulnerability.
Potential Impact
The vulnerability can cause memory exhaustion on affected systems when processing crafted compressed JWE tokens, potentially leading to denial of service. The impact is rated as low by Red Hat Product Security.
Mitigation Recommendations
Red Hat has released an official security update for python-jwcrypto in Red Hat Enterprise Linux 9 to fix this vulnerability. Users should apply the update as described in Red Hat advisory RHSA-2026:19197 and the referenced article https://access.redhat.com/articles/11258. No additional mitigation steps are indicated beyond applying the update.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:19197
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- null
Threat ID: 6a4049db27e9c7971982fdf8
Added to database: 06/27/2026, 22:08:27 UTC
Last enriched: 06/27/2026, 22:22:46 UTC
Last updated: 07/21/2026, 20:57:07 UTC
Views: 55
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