Bug 2517961 - CVE-2026-72816 opkssh: go-chi/chi: IP Spoofing via RealIP Middleware allows bypassing access controls [epel-all]
Summary: CVE-2026-72816 opkssh: go-chi/chi: IP Spoofing via RealIP Middleware allows b...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora EPEL
Classification: Fedora
Component: opkssh
Version: epel10
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: Till Hofmann
QA Contact:
URL:
Whiteboard: {"flaws": ["5fca9e5b-6b38-4e4b-9b95-a...
Depends On:
Blocks: CVE-2026-72816
TreeView+ depends on / blocked
 
Reported: 2026-08-18 15:52 UTC by Joel Chamberlain
Modified: 2026-08-31 16:38 UTC (History)
2 users (show)

Fixed In Version: opkssh-0.16.0-2.el10_3 opkssh-0.16.0-2.el10_2
Clone Of:
Environment:
Last Closed: 2026-08-31 16:23:53 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)

Description Joel Chamberlain 2026-08-18 15:52:57 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.

go-chi/chi through 5.2.1 contains an IP spoofing vulnerability in the RealIP middleware (middleware/realip.go). The realIP() function reads client-controlled headers (True-Client-IP, X-Real-IP, and X-Forwarded-For) and overwrites r.RemoteAddr without verifying that the request originated from a trusted proxy. Attackers can supply arbitrary IP addresses in these headers to bypass IP-based access controls, evade rate limiting and geo-IP restrictions, and pollute audit logs. Fixed in 5.3.0.

Comment 1 Fedora Update System 2026-08-19 08:39:29 UTC
FEDORA-EPEL-2026-8d8aa891da (opkssh-0.16.0-2.el10_2) has been submitted as an update to Fedora EPEL 10.2.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-8d8aa891da

Comment 2 Fedora Update System 2026-08-19 08:41:35 UTC
FEDORA-EPEL-2026-f45034028f (opkssh-0.16.0-2.el10_3) has been submitted as an update to Fedora EPEL 10.3.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-f45034028f

Comment 3 Fedora Update System 2026-08-20 15:29:21 UTC
FEDORA-EPEL-2026-8d8aa891da has been pushed to the Fedora EPEL 10.2 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-8d8aa891da

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 4 Fedora Update System 2026-08-20 15:58:21 UTC
FEDORA-EPEL-2026-f45034028f has been pushed to the Fedora EPEL 10.3 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-f45034028f

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 5 Fedora Update System 2026-08-31 16:23:53 UTC
FEDORA-EPEL-2026-f45034028f (opkssh-0.16.0-2.el10_3) has been pushed to the Fedora EPEL 10.3 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 6 Fedora Update System 2026-08-31 16:38:49 UTC
FEDORA-EPEL-2026-8d8aa891da (opkssh-0.16.0-2.el10_2) has been pushed to the Fedora EPEL 10.2 stable repository.
If problem still persists, please make note of it in this bug report.


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