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Vulnerability · Published Oct 21, 2026 · Assigned by redhat

CVE-2026-92822Libmodulemd: libmodulemd: unbounded recursion when parsing nested xmd yaml

Medium 6.2

In plain English

A medium-severity security flaw in Red Hat Enterprise Linux 10 from Red Hat. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 17% of all known vulnerabilities).

Severity (CVSS 3.1)6.2Medium
Exploit odds (30 days)0.3%top 83.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

A flaw was found in libmodulemd. When parsing module metadata, the xmd field is converted into nested GVariant values through recursive YAML mapping and sequence helpers without a recursion-depth or node-count limit. An attacker who can supply crafted modulemd YAML with deeply nested xmd content can cause stack exhaustion or excessive resource consumption, resulting in a denial of service.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12libmodulemdno fix listedDEBIAN-CVE-2026-92822
Debian:13libmodulemdno fix listedDEBIAN-CVE-2026-92822
Debian:14libmodulemdno fix listedDEBIAN-CVE-2026-92822
Ubuntu:22.04:LTSlibmodulemdno fix listedUBUNTU-CVE-2026-92822
Ubuntu:24.04:LTSlibmodulemdno fix listedUBUNTU-CVE-2026-92822
Ubuntu:26.04:LTSlibmodulemdno fix listedUBUNTU-CVE-2026-92822
Ubuntu:26.10libmodulemdno fix listedUBUNTU-CVE-2026-92822

Affected products (as reported)

VendorProductVersions
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Hardened Images see references
Red Hat Red Hat OpenShift Container Platform 4 see references
Red Hat Red Hat OpenShift Container Platform 4 see references
Red Hat Red Hat OpenShift Container Platform 5 see references

Weakness: CWE-674 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References