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CVE-2026-92822

Libmodulemd: libmodulemd: unbounded recursion when parsing nested xmd yaml

6.2 Medium

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.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

0.25%Up 0.1 points since Oct 21, 2026
90%50%10%1%

What each source reports

CVE List Score used 6.2

Libmodulemd: libmodulemd: unbounded recursion when parsing nested xmd yaml

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.

Record
CVE-2026-92822
CVSS 3.1
6.2 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-674
Updated
2026-11-06
EUVDEUVD-2026-107037 6.2

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.

Record
EUVD-2026-107037
CVSS 3.1
6.2 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-06
GitHub AdvisoriesGHSA-85r9-7wj5-x6x5 6.2

A flaw was found in libmodulemd. When parsing module metadata, the xmd field is converted into...

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.

Record
GHSA-85r9-7wj5-x6x5
CVSS 3.1
6.2 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-674
Updated
2026-11-06
NVD 6.2

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.

Record
CVE-2026-92822
CVSS 3.1
6.2 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-674
Updated
2026-11-06
OSVDEBIAN-CVE-2026-92822 6.2

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.

Record
DEBIAN-CVE-2026-92822
CVSS 3.1
6.2 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-07
OSVUBUNTU-CVE-2026-92822 6.2

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.

Record
UBUNTU-CVE-2026-92822
CVSS 3.1
6.2 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
libmodulemd
Debian:12
 All versions, plus listed versions
2.14.0-32.15.0-12.15.2-12.15.2-22.15.2-32.15.2-42.15.3-1
 None known
libmodulemd
Debian:13
 All versions, plus listed versions
2.15.0-12.15.2-12.15.2-22.15.2-32.15.2-42.15.3-1
 None known
libmodulemd
Debian:14
 All versions, plus listed versions
2.15.0-12.15.2-12.15.2-22.15.2-32.15.2-42.15.3-1
 None known
libmodulemd
Ubuntu:22.04:LTS
 All versions, plus listed versions
2.12.0-12.13.0-1
 None known
libmodulemd
Ubuntu:24.04:LTS
 All versions, plus listed versions
2.14.0-32.14.0-3build12.14.0-3build2
 None known
libmodulemd
Ubuntu:26.10
 All versions, plus listed versions
2.15.2-32.15.2-42.15.3-1
 None known
libmodulemd
Ubuntu:26.04:LTS
 All versions, plus listed versions
2.15.0-12.15.2-12.15.2-3
 None known

History

History
RecordedChangedSources
productsCVE List, EUVD, GitHub Advisories, NVD
facts, referencesCVE List
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-92822 is a medium vulnerability (CVSS 6.2) in Red Hat Enterprise Linux 10, published October 21, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.25%, the 16th percentile. No source names a fixed version.

References

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