Re: [ANNOUNCE] Git 2.56.1 and friends
From: Todd Zullinger
Date: Tue Nov 10 2026 - 18:31:00 EST
Junio C Hamano wrote:
> Credit for organizing the set of these releases goes to Johannes
> Schindelin. Credit for finding the vulnerabilities goes to Luke
> Martin and pwn2addr. Credit for fixing them goes to Toon Claes,
> Karthik Nayak, and Kaartic Sivaraam. The xdiff hardening is based
> on a patch by Jeff King, with help from Toon Claes and Christian
> Couder.
Many thanks to all for the effort, including Junio.
> This addresses the security issues CVE-2026-111760, CVE-2026-113408,
> CVE-2026-114466, CVE-2026-114467, CVE-2026-114469 and CVE-2026-105437.
>
> * CVE-2026-113408:
>
> It is possible for a server to advertise an unborn HEAD that contains
> path-traversal characters (e.g., `refs/heads/../../../TARGET`). With
> the files ref backend that can lead to ref-updating actions to write
> to unwanted files.
>
> See <https://gitlab.com/gitlab-org/git/-/work_items/809> for details.
FWIW, this and the other GitLab work item links appear to be
inaccessible to normal users. I'm guessing that's not the
intent.
I added Patrick to the Cc as one of the folks who may be
able to poke the right folks at GitLab to open them up?
Cheers and thanks again,
--
Todd