CVE-2026-92823 Libmodulemd: libmodulemd: missing decompressed-size limit when parsing compressed yaml
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-92823?
CVE-2026-92823 is a medium-severity vulnerability in Red Hat Enterprise Linux 10, published on 21 Oct 2026.
Official description
A flaw was found in libmodulemd. In builds with rpmio support enabled, compressed modulemd YAML is decompressed through a custom read handler that does not enforce a cumulative decompressed-size limit before parsing. An attacker who can supply a highly compressible compressed YAML file can cause excessive CPU and memory consumption, resulting in a denial of service.
Weakness: CWE-409
Which versions are affected by CVE-2026-92823?
How do I fix CVE-2026-92823?
No fix has been published for CVE-2026-92823 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-92823 being exploited?
There is no known exploitation of CVE-2026-92823 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-92823, GHSA-x9m8-9g38-v659, UBUNTU-CVE-2026-92823.