Red Hat Security Advisory: Technical preview of the satellite/iop-vulnerability-frontend-rhel9 container image
Affects Red Hat brace-expansionSource GCVE Database
Public exploit available · CVSS 7.7 High : upgrade Red Hat brace-expansion to 1.1.12 as a priority.
Data as of 30 Oct 2026, 11:52 UTC
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 30% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 1.1.12
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/S:N/AU:Y/R:U/V:D/RE:M/U:AmberExploitation evidence
Disclosed: evidence found.
CVE published 30 Jun 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: evidence found.
CVSS exploit maturity: proof of concept public
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), CVSS vector, the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Upgrade brace-expansion to 1.1.12.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
npmbrace-expansionpkg:npm/brace-expansionOther 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
Currently, there is no practical mitigation for this vulnerability. The brace-expansion package is typically a transitive dependency, making isolation difficult. Users should monitor Red Hat advisories and upgrade to a fixed version of brace-expansion when it becomes available. Red Hat Satellite documentation should be consulted for installation and configuration guidance.
Description
A denial of service (DoS) vulnerability exists in the brace-expansion npm package used by Red Hat Satellite's Lightspeed component. The expand() function can be triggered to consume excessive CPU and block the event loop by processing specially crafted strings with consecutive non-expanding brace groups, leading to exponential-time complexity. No practical mitigation is currently available other than upgrading to a fixed version when released.
References
- access.redhat.com/errata/RHSA-2026:51348 (opens in a new tab)
- access.redhat.com/documentation/en-us/red_hat_satellite/6.18/html/updating_red_hat_satellite/index (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-13149 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-13676 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-45822 (opens in a new tab)
- access.redhat.com/security/updates/classification/ (opens in a new tab)
- catalog.redhat.com/software/containers/search (opens in a new tab)
- docs.redhat.com/en/documentation/red_hat_satellite/6.18/html/installing_satellite_server_in_a_connected_network_environment/performing-additional-configuration-on-server_satellite (opens in a new tab)
- docs.redhat.com/en/documentation/red_hat_satellite/6.18/html/installing_satellite_server_in_a_disconnected_network_environment/performing-additional-configuration (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_51348.json (opens in a new tab)