CVE catalog

CVE-2026-92823

libmodulemd: CVE-2026-92823

Severity: Medium · CVSS 6.2CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: Oct 21, 2026, 3:02:56 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.16% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	libmodulemd	sid	`2.15.3-1`	vulnerable
Debian	libmodulemd	forky	`2.15.3-1`	vulnerable
Debian	libmodulemd	trixie	`2.15.0-1`	vulnerable
Debian	libmodulemd	bookworm	`2.14.0-3`	vulnerable
Ubuntu	libmodulemd	22.04	`2.12.0-1`	vulnerable
Ubuntu	libmodulemd	22.04	`2.13.0-1`	vulnerable
Ubuntu	libmodulemd	24.04	`2.14.0-3`	vulnerable
Ubuntu	libmodulemd	24.04	`2.14.0-3build1`	vulnerable
Ubuntu	libmodulemd	24.04	`2.14.0-3build2`	vulnerable
Ubuntu	libmodulemd	26.10	`2.15.2-3`	vulnerable
Ubuntu	libmodulemd	26.10	`2.15.2-4`	vulnerable
Ubuntu	libmodulemd	26.10	`2.15.3-1`	vulnerable
Ubuntu	libmodulemd	26.04	`2.15.0-1`	vulnerable
Ubuntu	libmodulemd	26.04	`2.15.2-1`	vulnerable
Ubuntu	libmodulemd	26.04	`2.15.2-3`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	libmodulemd	source	sid	`(unfixed)`	not yet assigned	Not reported	Not reported
Debian	libmodulemd	source	forky	`(unfixed)`	not yet assigned	Not reported	Not reported
Debian	libmodulemd	source	trixie	`(unfixed)`	not yet assigned	Not reported	Not reported
Debian	libmodulemd	source	bookworm	`(unfixed)`	not yet assigned	Not reported	Not reported

Notes

[trixie] libmodulemd: Minor issue

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[gir1.2-modulemd-2.0]Affected
Source package: [libmodulemd]
Details (2)
- 2.14.0-3 · amd64 · bookworm
  Affected
  dsa · libmodulemd · debian · bookworm; dsa · libmodulemd · debian · 12
- 2.14.0-3 · arm64 · bookworm
  Affected
  dsa · libmodulemd · debian · bookworm; dsa · libmodulemd · debian · 12
[libmodulemd2]Affected
Source package: [libmodulemd]
Details (2)
- 2.14.0-3 · amd64 · bookworm
  Affected
  dsa · libmodulemd · debian · bookworm; dsa · libmodulemd · debian · 12
- 2.14.0-3 · arm64 · bookworm
  Affected
  dsa · libmodulemd · debian · bookworm; dsa · libmodulemd · debian · 12
[libmodulemd-dev]Affected
Source package: [libmodulemd]
Details (2)
- 2.14.0-3 · amd64 · bookworm
  Affected
  dsa · libmodulemd · debian · bookworm; dsa · libmodulemd · debian · 12
- 2.14.0-3 · arm64 · bookworm
  Affected
  dsa · libmodulemd · debian · bookworm; dsa · libmodulemd · debian · 12
[libmodulemd-tools]Affected
Source package: [libmodulemd]
Details (2)
- 2.14.0-3 · amd64 · bookworm
  Affected
  dsa · libmodulemd · debian · bookworm; dsa · libmodulemd · debian · 12
- 2.14.0-3 · arm64 · bookworm
  Affected
  dsa · libmodulemd · debian · bookworm; dsa · libmodulemd · debian · 12

[Debian 13 (Trixie)]

[gir1.2-modulemd-2.0]Affected
Source package: [libmodulemd]
Details (2)
- 2.15.0-1 · amd64 · trixie
  Affected
  dsa · libmodulemd · debian · 13
- 2.15.0-1 · arm64 · trixie
  Affected
  dsa · libmodulemd · debian · 13
[libmodulemd2]Affected
Source package: [libmodulemd]
Details (2)
- 2.15.0-1 · amd64 · trixie
  Affected
  dsa · libmodulemd · debian · 13
- 2.15.0-1 · arm64 · trixie
  Affected
  dsa · libmodulemd · debian · 13
[libmodulemd-dev]Affected
Source package: [libmodulemd]
Details (2)
- 2.15.0-1 · amd64 · trixie
  Affected
  dsa · libmodulemd · debian · 13
- 2.15.0-1 · arm64 · trixie
  Affected
  dsa · libmodulemd · debian · 13
[libmodulemd-tools]Affected
Source package: [libmodulemd]
Details (2)
- 2.15.0-1 · amd64 · trixie
  Affected
  dsa · libmodulemd · debian · 13
- 2.15.0-1 · arm64 · trixie
  Affected
  dsa · libmodulemd · debian · 13

Observed: Oct 25, 2026, 2:50:46 AM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]