Bug 2459324 - CVE-2026-41082 opam: path traversal via the .install field [fedora-all]
Summary: CVE-2026-41082 opam: path traversal via the .install field [fedora-all]
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: Fedora
Classification: Fedora
Component: opam
Version: rawhide
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: ---
Assignee: Jerry James
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["1b0957b2-7d7b-42a6-8d36-a...
Depends On:
Blocks: CVE-2026-41082
TreeView+ depends on / blocked
 
Reported: 2026-04-17 21:23 UTC by Guilherme de Almeida Suckevicz
Modified: 2026-05-01 20:14 UTC (History)
2 users (show)

Fixed In Version: opam-2.5.1-1.fc45
Clone Of:
Environment:
Last Closed: 2026-05-01 20:14:19 UTC
Type: ---
Embargoed:

Attachments (Terms of Use)

Description Guilherme de Almeida Suckevicz 2026-04-17 21:23:23 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Comment 1 Jerry James 2026-04-20 14:39:23 UTC 
This bug was filed against the wrong component.  CVE-2026-41082 is a flaw in opam, not dune.
Comment 2 Jerry James 2026-04-20 14:40:49 UTC 
By the time this bug was filed, I had already built opam 2.5.1, with the fix for this issue, in Fedora 42, 43, 44 and Rawhide, and the update had been pushed to the testing repositories.  I don't want to edit the updates now to add this bug, because I'm not sure if that restarts the 7 day testing timer or not.
Comment 3 Jerry James 2026-05-01 20:13:04 UTC 
@gsuckevi , you filed this bug against the wrong component.  I fixed it, and then you made it wrong again.  CVE-2026-41082 is NOT A BUG IN DUNE, it is is a BUG IN OPAM.  Read the CVE.  Start from the top and read every word, all the way to the end: https://access.redhat.com/security/cve/cve-2026-41082.

Quiz time!
Problem 1: Is dune mentioned anywhere in the CVE text? (Hint: only in the title of the RedHat bug, not in the description.)
Problem 2: Is opam mentioned anywhere in the CVE text? (Hint: yes)

Also see the upstream opam discussion of this bug:
- https://github.com/ocaml/security-advisories/pull/20
- https://github.com/ocaml/opam/pull/6897
- https://github.com/ocaml/opam/pull/6898
Comment 4 Jerry James 2026-05-01 20:14:19 UTC 
Version 2.5.1 of opam, which has the fix for this bug, is now stable in Fedora 42, 43, 44, and Rawhide.
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