Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
Affects Red HatSource GCVE Database
Not known to be exploited · CVSS 7.8 High · fixed in Red Hat package updates : patch Red Hat os soon.
Data as of 30 Oct 2026, 01:16 UTC
- Patch
- Available – fixed in 1.27.0-rc.2, 1.26.5, 1.25.12
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 8 Jul 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.
What to do
Upgrade os to 1.27.0-rc.2, 1.26.5 or 1.25.12.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Go standard libraryos | Affected
| Fixed in
|
| Go standard libraryos | Affected
| Fixed in
|
| Go standard libraryos | Affected
| Fixed in
|
Goospkg:golang/osOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
The only mitigation is to update the Go toolchain to a fixed version: Go 1.25.12 or Go 1.26.5. Programs compiled with Go versions prior to 1.24 or that do not use the os.Root API are not affected. Red Hat has released updated golang1.25 packages containing the fix. Users should apply these updates to eliminate the vulnerability.
Description
A vulnerability was found in the os.Root functionality of the Go programming language on Unix systems. The flaw allows an attacker who can create symbolic links within an os.Root directory to bypass intended directory restrictions by crafting a path ending with a symbolic link and a trailing slash. This improper symlink resolution can lead to unauthorized file system access or information disclosure. The issue affects Go versions starting from 1.24, with fixes available in Go 1.25.12 and 1.26.5. Red Hat has issued an update for its Hardened Images RPMs including these fixed Go versions.
References
- access.redhat.com/errata/RHSA-2026:36510 (opens in a new tab)
- images.redhat.com (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-39822 (opens in a new tab)
- access.redhat.com/security/updates/classification/ (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-42505 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_36510.json (opens in a new tab)