Medium severity · published Aug 27, 2026
CVE-2026-80179
Jwcrypto: jwcrypto: denial of service via malformed jwe tokens
5.9
CVSS
0.4%
EPSS
No
On KEV
Description
A flaw was found in jwcrypto. A remote attacker can send a specially crafted JSON Web Encryption (JWE) token containing numerous period delimiters. This malformed token can force the JWE.deserialize() function to allocate excessive memory, leading to a MemoryError. This issue results in a denial of service (DoS) for services that process untrusted JWE values.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 35% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RH
Red Hat Ansible Automation Platform 2 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Enterprise Linux 10 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Enterprise Linux 9 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat OpenShift AI (RHOAI) · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat OpenStack Platform 16.2 · Red Hat
All versions, or not specified · source: vendor
Affected product
RH
Red Hat Ansible Automation Platform 2
Red Hat
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-80179
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-80179
access.redhat.com
https://access.redhat.com/security/cve/CVE-2026-80179
bugzilla.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2524147
github.com
https://github.com/latchset/jwcrypto/security/advisories/GHSA-96rv-c4vc-h4f4
More from Red Hat Ansible Automation Platform 2
10.0
CVE-2026-42043
Axios: Incomplete Fix for CVE-2025-62718 — NO_PROXY Protection Bypassed via RFC 1122 Loopback Subnet (127.0.0.0/8) in Axios 1.15.0
9.9
CVE-2025-62718
Axios has a NO_PROXY Hostname Normalization Bypass that Leads to SSRF
9.8
CVE-2026-49468
LiteLLM: Authentication Bypass via Host Header Injection
9.8
CVE-2026-39892
cryptography has a buffer overflow if non-contiguous buffers were passed to APIs
9.8
CVE-2026-27459
pyOpenSSL DTLS cookie callback buffer overflow