High7.5Vendor: LowRed Hat & Ubuntu Linux
Memory exhaustion via crafted compressed JWE tokens
CVE-2026-39373 Published Apr 7, 2026
CVE-2026-39373
Affected products & platforms
Red Hat & Ubuntu LinuxUnclassified
Summary
Memory exhaustion via crafted compressed JWE tokens. Red Hat rates this low (CVSS 7.5). Weakness: CWE-770. Affected package(s): python3.12-jwcrypto, python-jwcrypto. Resolved in Red Hat advisory RHSA-2026:13508 — update the affected packages (`sudo dnf update`).
Affected versions
- python3.12-jwcrypto-0:1.5.7-1.el8ap
- python3.12-jwcrypto-0:1.5.7-1.el9ap
- python-jwcrypto-0:1.5.6-5.el10_2
- python-jwcrypto-0:1.5.6-3.el9_8
Official advisory · high-confidence parse· fetched 5 hours ago·verify at source
Fixed versions
- RHSA-2026:13508
Official advisory · high-confidence parse· fetched 5 hours ago·verify at source
Mitigation checklist
Recommended fix / mitigation
- Update the affected package(s) to the fixed version shipped in RHSA-2026:13508 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 5 hours ago·verify at source
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