CVE-2026-96275: Red Hat Enterprise Linux 10 · Improper Limitation of a Pathname to a Restricted Directory
Affects Red Hat Enterprise Linux 10Source CVE Database V5
Not known to be exploited · CVSS 8.8 High.
Data as of 7 Nov 2026, 11:40 UTC
Thin evidence
One scorer or none| CNA (redhat) | CVSS 3.1 | 8.8 |
|---|
- EPSS
- 0.5% chance of exploitation in 30 days – higher than 47% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 23 Sep 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 7 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 10flatpak | Affected– | Fixed in– |
| Red Hat Enterprise Linux 10.0 Extended Update Supportflatpak | Affected– | Fixed in– |
| Red Hat Enterprise Linux 8flatpak | Affected– | Fixed in– |
| Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Supportflatpak | Affected– | Fixed in– |
| Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-Onflatpak | Affected– | Fixed in– |
| Red Hat Enterprise Linux 9flatpak | Affected– | Fixed in– |
AI-suggested
Avoid installing Flatpak extensions from non-trusted sources. Since exploitation requires adding or trusting a malicious repository and initiating an install or update, restricting repository sources is critical. Check the Red Hat advisory for any official patches or updates and apply them promptly if available. Patch status is not explicitly confirmed in the advisory; therefore, verify current remediation guidance from Red Hat.
Description
A malicious or compromised Flatpak repository can write attacker-controlled content to arbitrary locations on the host filesystem via extract_extra_data(). On system installs, the write happens as root. Two issues combine: `files/extra` is resolved via path operations that follow symlinks, and blob names from `xa.extra-data-sources` are not sanitized against `..` traversal.
References
- access.redhat.com/security/cve/CVE-2026-96275 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2539416 (opens in a new tab)
- github.com/flatpak/flatpak/security/advisories/GHSA-fqx6-vh4p-42cg (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:80498 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:80497 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:80687 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:89733 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:90364 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:92369 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:92221 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:95493 (opens in a new tab)