CVE catalog

CVE-2026-41082

In OCaml opam before 2.5.1, a .install field containing a destination filepath can use ../ to reach a parent directory.

Severity: High · CVSS 7.3CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L
Published: Apr 16, 2026, 5:32:40 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.21% · Oct 25, 2026

In OCaml opam before 2.5.1, a .install field containing a destination filepath can use ../ to reach a parent directory.

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	opam	sid	`2.6.1-1`	fixed
Debian	opam	forky	`2.5.2-1`	fixed
Debian	opam	trixie	`2.3.0-1+deb13u2`	fixed
Debian	opam	trixie-security	`2.3.0-1+deb13u2`	fixed
Debian	opam	bookworm	`2.1.2-1+deb12u1`	fixed
Debian	opam	bookworm-security	`2.1.2-1+deb12u2`	fixed
Cpe	opam	Not reported	`2.1.5-1ubuntu0.1~esm2`	fixed
Cpe	opam-doc	Not reported	`2.1.5-1ubuntu0.1~esm2`	fixed
Cpe	opam-installer	Not reported	`2.1.5-1ubuntu0.1~esm2`	fixed
Cpe	opam	Not reported	`2.5.1`	fixed
Cpe	debian_linux	Not reported	Not reported	unknown
Cpe	enterprise_linux	Not reported	Not reported	unknown
Opensuse	opam	leap 16.0	`2.5.2-bp160.1.1`	fixed
Ubuntu	opam	pro	`2.3.0-1`	vulnerable
Ubuntu	opam	pro	`2.4.1-1`	vulnerable
Ubuntu	opam	pro	`2.5.0-1`	vulnerable
Ubuntu	opam	pro	`2.5.0-1ubuntu0.1~esm1`	fixed
Ubuntu	opam	22.04	`2.0.8-1`	vulnerable
Ubuntu	opam	22.04	`2.0.10-1`	vulnerable
Ubuntu	opam	22.04	`2.1.2-1`	vulnerable
Ubuntu	opam	22.04	`2.1.2-1+deb12u1build0.22.04.1`	fixed
Ubuntu	opam	25.10	`2.3.0-1`	vulnerable
Ubuntu	opam	25.10	`2.3.0-1+deb13u1build0.25.10.1`	fixed
Opensuse	opam	tumbleweed	`2.5.1-1.1`	fixed
Cpe	opam	Not reported	`2.5.1`	fixed
Cpe	debian_linux	Not reported	Not reported	unknown
Cpe	enterprise_linux	Not reported	Not reported	unknown

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	opam	source	sid	`2.5.1-1`	not yet assigned	Not reported	Not reported
Debian	opam	source	forky	`2.5.1-1`	not yet assigned	Not reported	Not reported
Debian	opam	source	trixie	`2.3.0-1+deb13u1`	not yet assigned	Not reported	Not reported
Debian	opam	source	bookworm	`2.1.2-1+deb12u1`	not yet assigned	Not reported	Not reported
Cpe	opam	cpe	Not reported	`2.1.5-1ubuntu0.1~esm2`	Not reported	Not reported	Not reported
Cpe	opam-doc	cpe	Not reported	`2.1.5-1ubuntu0.1~esm2`	Not reported	Not reported	Not reported
Cpe	opam-installer	cpe	Not reported	`2.1.5-1ubuntu0.1~esm2`	Not reported	Not reported	Not reported
Cpe	opam	cpe	Not reported	`2.5.1`	Not reported	Not reported	Not reported
Opensuse	opam	rpm	leap 16.0	`2.5.2-bp160.1.1`	Not reported	OPENSUSE-SU-2026:21380-1	Not reported
Ubuntu	opam	deb	pro	`2.5.0-1ubuntu0.1~esm1`	Not reported	USN-8256-1	Not reported
Ubuntu	opam	deb	22.04	`2.1.2-1+deb12u1build0.22.04.1`	Not reported	USN-8256-1	Not reported
Ubuntu	opam	deb	25.10	`2.3.0-1+deb13u1build0.25.10.1`	Not reported	USN-8256-1	Not reported
Opensuse	opam	rpm	tumbleweed	`2.5.1-1.1`	Not reported	OPENSUSE-SU-2026:10568-1	Not reported
Cpe	opam	cpe	Not reported	`2.5.1`	Not reported	NVD-CVE-2026-41082	Not reported

OpenFactory catalog packages

[openSUSE Tumbleweed]

[opam-devel]Unknown
Source package: [opam]
Details (1)
- 2.5.2-1.4 · x86_64 · tumbleweed
  Unknown · Fixed: 2.5.1-1.1
  Version impact unknown
  nvd · opam · opensuse · tumbleweed
[opam-installer]Unknown
Source package: [opam]
Details (1)
- 2.5.2-1.4 · x86_64 · tumbleweed
  Unknown · Fixed: 2.5.1-1.1
  Version impact unknown
  nvd · opam · opensuse · tumbleweed
[opam]Fixed
Source package: [opam]
Details (1)
- 2.5.2-1.4 · x86_64 · tumbleweed
  Fixed · Fixed: 2.5.1-1.1
  nvd · opam · opensuse · tumbleweed

[Debian 12 (Bookworm)]

[opam]Fixed
Details (4)
- 2.1.2-1+deb12u1 · amd64 · bookworm
  Fixed · Fixed: 2.1.2-1+deb12u1
  nvd · opam · debian · bookworm; nvd · opam · debian · 12
- 2.1.2-1+deb12u1 · arm64 · bookworm
  Fixed · Fixed: 2.1.2-1+deb12u1
  nvd · opam · debian · bookworm; nvd · opam · debian · 12
- 2.1.2-1+deb12u2 · amd64 · bookworm-security
  Fixed · Fixed: 2.1.2-1+deb12u1
  nvd · opam · debian · bookworm; nvd · opam · debian · 12
- 2.1.2-1+deb12u2 · arm64 · bookworm-security
  Fixed · Fixed: 2.1.2-1+deb12u1
  nvd · opam · debian · bookworm; nvd · opam · debian · 12
[opam-doc]Fixed
Source package: [opam]
Details (4)
- 2.1.2-1+deb12u1 · all · bookworm
  Fixed · Fixed: 2.1.2-1+deb12u1
  nvd · opam · debian · bookworm; nvd · opam · debian · 12
- 2.1.2-1+deb12u1 · all · bookworm
  Fixed · Fixed: 2.1.2-1+deb12u1
  nvd · opam · debian · bookworm; nvd · opam · debian · 12
- 2.1.2-1+deb12u2 · all · bookworm-security
  Fixed · Fixed: 2.1.2-1+deb12u1
  nvd · opam · debian · bookworm; nvd · opam · debian · 12
- 2.1.2-1+deb12u2 · all · bookworm-security
  Fixed · Fixed: 2.1.2-1+deb12u1
  nvd · opam · debian · bookworm; nvd · opam · debian · 12
[opam-installer]Fixed
Source package: [opam]
Details (4)
- 2.1.2-1+deb12u1 · amd64 · bookworm
  Fixed · Fixed: 2.1.2-1+deb12u1
  nvd · opam · debian · bookworm; nvd · opam · debian · 12
- 2.1.2-1+deb12u1 · arm64 · bookworm
  Fixed · Fixed: 2.1.2-1+deb12u1
  nvd · opam · debian · bookworm; nvd · opam · debian · 12
- 2.1.2-1+deb12u2 · amd64 · bookworm-security
  Fixed · Fixed: 2.1.2-1+deb12u1
  nvd · opam · debian · bookworm; nvd · opam · debian · 12
- 2.1.2-1+deb12u2 · arm64 · bookworm-security
  Fixed · Fixed: 2.1.2-1+deb12u1
  nvd · opam · debian · bookworm; nvd · opam · debian · 12

[Debian 13 (Trixie)]

[opam]Fixed
Details (4)
- 2.3.0-1+deb13u1 · amd64 · trixie
  Fixed · Fixed: 2.3.0-1+deb13u1
  nvd · opam · debian · 13
- 2.3.0-1+deb13u1 · arm64 · trixie
  Fixed · Fixed: 2.3.0-1+deb13u1
  nvd · opam · debian · 13
- 2.3.0-1+deb13u2 · amd64 · trixie-security
  Fixed · Fixed: 2.3.0-1+deb13u1
  nvd · opam · debian · 13
- 2.3.0-1+deb13u2 · arm64 · trixie-security
  Fixed · Fixed: 2.3.0-1+deb13u1
  nvd · opam · debian · 13
[opam-doc]Fixed
Source package: [opam]
Details (4)
- 2.3.0-1+deb13u1 · all · trixie
  Fixed · Fixed: 2.3.0-1+deb13u1
  nvd · opam · debian · 13
- 2.3.0-1+deb13u1 · all · trixie
  Fixed · Fixed: 2.3.0-1+deb13u1
  nvd · opam · debian · 13
- 2.3.0-1+deb13u2 · all · trixie-security
  Fixed · Fixed: 2.3.0-1+deb13u1
  nvd · opam · debian · 13
- 2.3.0-1+deb13u2 · all · trixie-security
  Fixed · Fixed: 2.3.0-1+deb13u1
  nvd · opam · debian · 13
[opam-installer]Fixed
Source package: [opam]
Details (4)
- 2.3.0-1+deb13u1 · amd64 · trixie
  Fixed · Fixed: 2.3.0-1+deb13u1
  nvd · opam · debian · 13
- 2.3.0-1+deb13u1 · arm64 · trixie
  Fixed · Fixed: 2.3.0-1+deb13u1
  nvd · opam · debian · 13
- 2.3.0-1+deb13u2 · amd64 · trixie-security
  Fixed · Fixed: 2.3.0-1+deb13u1
  nvd · opam · debian · 13
- 2.3.0-1+deb13u2 · arm64 · trixie-security
  Fixed · Fixed: 2.3.0-1+deb13u1
  nvd · opam · debian · 13

Observed: Oct 27, 2026, 7:59:04 AM UTC

References

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