CVE-2024-28102 JWCrypto vulnerable to JWT bomb Attack in `deserialize` function

What is CVE-2024-28102?

CVE-2024-28102 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 6 Mar 2024. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

JWCrypto implements JWK, JWS, and JWE specifications using python-cryptography. Prior to version 1.5.6, an attacker can cause a denial of service attack by passing in a malicious JWE Token with a high compression ratio. When the server processes this token, it will consume a lot of memory and processing time. Version 1.5.6 fixes this vulnerability by limiting the maximum token length.

Weakness: CWE-770

Which versions are affected by CVE-2024-28102?

3 open source packages ship an affected version, including jwcrypto. It affects 2 products.

Products include Debian Debian Linux, Latchset Jwcrypto.

How do I fix CVE-2024-28102?

Upgrade jwcrypto to 1.5.6 or later.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2024-28102 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-28102 exists.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as ALSA-2024:2559, AZL-43360, AZL-43366, DEBIAN-CVE-2024-28102, DLA-3883-1, GHSA-j857-7rvv-vj97 and 8 more.