CVE catalog

CVE-2026-78367

Severity: High · CVSS 7CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Published: Aug 24, 2026, 12:00:00 AM UTC
Updated: Aug 24, 2026, 2:17:04 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.20% · Oct 25, 2026

A vulnerability was found in RPM's rpmbuild tarball processing. When processing a crafted source archive, the getTarSpec() function in tools/rpmbuild.cc passes an attacker-controlled tar archive member name to rpmExpand() as part of a %{basename:...} macro expression. A specially crafted .spec member name can therefore inject RPM macros, including Lua expressions, resulting in arbitrary code execution with the privileges of the user running rpmbuild. This can be exploited when a victim or automated build system processes an attacker-controlled source tarball using rpmbuild tarball mode (such as -ts, -ta, or -tb).

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	rpm	sid	`6.1.0-1`	vulnerable
Debian	rpm	forky	`6.1.0-1`	vulnerable
Debian	rpm	trixie	`4.20.1+dfsg-3`	vulnerable
Debian	rpm	bookworm	`4.18.0+dfsg-1+deb12u1`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	rpm	source	sid	`(unfixed)`	not yet assigned	Not reported	[1145876]
Debian	rpm	source	forky	`(unfixed)`	not yet assigned	Not reported	[1145876]
Debian	rpm	source	trixie	`(unfixed)`	not yet assigned	Not reported	[1145876]
Debian	rpm	source	bookworm	`(unfixed)`	not yet assigned	Not reported	[1145876]

[Debian bug #1145876]

Notes

[trixie] rpm: Minor issue [bookworm] rpm: Minor issue

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[librpm9]Affected
Source package: [rpm]
Details (2)
- 4.18.0+dfsg-1+deb12u1 · amd64 · bookworm
  Affected
  nvd · rpm · debian · bookworm
- 4.18.0+dfsg-1+deb12u1 · arm64 · bookworm
  Affected
  nvd · rpm · debian · bookworm
[librpmbuild9]Affected
Source package: [rpm]
Details (2)
- 4.18.0+dfsg-1+deb12u1 · amd64 · bookworm
  Affected
  nvd · rpm · debian · bookworm
- 4.18.0+dfsg-1+deb12u1 · arm64 · bookworm
  Affected
  nvd · rpm · debian · bookworm
[librpm-dev]Affected
Source package: [rpm]
Details (2)
- 4.18.0+dfsg-1+deb12u1 · amd64 · bookworm
  Affected
  nvd · rpm · debian · bookworm
- 4.18.0+dfsg-1+deb12u1 · arm64 · bookworm
  Affected
  nvd · rpm · debian · bookworm
[librpmio9]Affected
Source package: [rpm]
Details (2)
- 4.18.0+dfsg-1+deb12u1 · amd64 · bookworm
  Affected
  nvd · rpm · debian · bookworm
- 4.18.0+dfsg-1+deb12u1 · arm64 · bookworm
  Affected
  nvd · rpm · debian · bookworm
[librpmsign9]Affected
Source package: [rpm]
Details (2)
- 4.18.0+dfsg-1+deb12u1 · amd64 · bookworm
  Affected
  nvd · rpm · debian · bookworm
- 4.18.0+dfsg-1+deb12u1 · arm64 · bookworm
  Affected
  nvd · rpm · debian · bookworm
[python3-rpm]Affected
Source package: [rpm]
Details (2)
- 4.18.0+dfsg-1+deb12u1 · amd64 · bookworm
  Affected
  nvd · rpm · debian · bookworm
- 4.18.0+dfsg-1+deb12u1 · arm64 · bookworm
  Affected
  nvd · rpm · debian · bookworm
[rpm]Affected
Details (2)
- 4.18.0+dfsg-1+deb12u1 · amd64 · bookworm
  Affected
  nvd · rpm · debian · bookworm
- 4.18.0+dfsg-1+deb12u1 · arm64 · bookworm
  Affected
  nvd · rpm · debian · bookworm
[rpm2cpio]Affected
Source package: [rpm]
Details (2)
- 4.18.0+dfsg-1+deb12u1 · amd64 · bookworm
  Affected
  nvd · rpm · debian · bookworm
- 4.18.0+dfsg-1+deb12u1 · arm64 · bookworm
  Affected
  nvd · rpm · debian · bookworm
[rpm-common]Affected
Source package: [rpm]
Details (2)
- 4.18.0+dfsg-1+deb12u1 · amd64 · bookworm
  Affected
  nvd · rpm · debian · bookworm
- 4.18.0+dfsg-1+deb12u1 · arm64 · bookworm
  Affected
  nvd · rpm · debian · bookworm
[rpm-i18n]Affected
Source package: [rpm]
Details (2)
- 4.18.0+dfsg-1+deb12u1 · all · bookworm
  Affected
  nvd · rpm · debian · bookworm
- 4.18.0+dfsg-1+deb12u1 · all · bookworm
  Affected
  nvd · rpm · debian · bookworm

Observed: Oct 23, 2026, 9:37:03 PM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]