CVE-2026-41082
"OCaml opam Path Traversal Vulnerability"
Description
In OCaml opam before 2.5.1, a .install field containing a destination filepath can use ../ to reach a parent directory.
INFO
Published Date :
April 16, 2026, 6:16 p.m.
Last Modified :
July 8, 2026, 3:29 a.m.
Remotely Exploit :
No
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-41082
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | 8254265b-2729-46b6-b9e3-3dfca2d5bfca | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | MITRE-CVE | ||||
| CVSS 3.1 | HIGH | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | ||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update opam to version 2.5.1 or later.
- Verify installation path configurations.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-41082.
| URL | Resource |
|---|---|
| https://github.com/ocaml/opam/pull/6897 | Issue Tracking Patch |
| https://github.com/ocaml/opam/releases/tag/2.5.1 | Release Notes |
| https://osv.dev/vulnerability/OSEC-2026-03 | Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2026/04/msg00021.html | Mailing List Third Party Advisory |
| https://access.redhat.com/security/cve/CVE-2026-41082 | Third Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=2459003 | Issue Tracking |
| https://osv.dev/vulnerability/OSEC-2026-03 | Third Party Advisory |
| https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-41082.json | Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-41082 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-41082
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-41082 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-41082 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jul. 08, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Added CWE CWE-22 Added CPE Configuration OR *cpe:2.3:a:ocaml:opam:*:*:*:*:*:*:*:* versions up to (excluding) 2.5.1 Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:* Added Reference Type MITRE: https://github.com/ocaml/opam/pull/6897 Types: Issue Tracking, Patch Added Reference Type MITRE: https://github.com/ocaml/opam/releases/tag/2.5.1 Types: Release Notes Added Reference Type MITRE: https://osv.dev/vulnerability/OSEC-2026-03 Types: Third Party Advisory Added Reference Type CISA-ADP: https://osv.dev/vulnerability/OSEC-2026-03 Types: Third Party Advisory Added Reference Type CVE: https://lists.debian.org/debian-lts-announce/2026/04/msg00021.html Types: Mailing List, Third Party Advisory Added Reference Type redhat-SADP: https://access.redhat.com/security/cve/CVE-2026-41082 Types: Third Party Advisory Added Reference Type redhat-SADP: https://bugzilla.redhat.com/show_bug.cgi?id=2459003 Types: Issue Tracking Added Reference Type redhat-SADP: https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-41082.json Types: Third Party Advisory -
CVE Modified by 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Jun. 30, 2026
Action Type Old Value New Value Added Affected [{'cpes': ['cpe:/o:redhat:enterprise_linux:10'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 10', 'defaultStatus': 'affected'}] Added CVSS V3.1 AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H Added CWE CWE-24 Added Reference https://access.redhat.com/security/cve/CVE-2026-41082 Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=2459003 Added Reference https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-41082.json -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'OCaml', 'product': 'opam', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '2.5.1', 'versionType': 'semver'}], 'packageURL': 'pkg:opam/opam-format', 'defaultStatus': 'unaffected'}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-41082', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-06-16T16:10:19.452755Z'} -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 16, 2026
Action Type Old Value New Value Added Reference https://osv.dev/vulnerability/OSEC-2026-03 -
CVE Modified by [email protected]
Jun. 15, 2026
Action Type Old Value New Value Added Reference https://osv.dev/vulnerability/OSEC-2026-03 -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Apr. 21, 2026
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2026/04/msg00021.html -
New CVE Received by [email protected]
Apr. 16, 2026
Action Type Old Value New Value Added Description In OCaml opam before 2.5.1, a .install field containing a destination filepath can use ../ to reach a parent directory. Added CVSS V3.1 AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L Added CWE CWE-24 Added Reference https://github.com/ocaml/opam/pull/6897 Added Reference https://github.com/ocaml/opam/releases/tag/2.5.1