Bug 2494966
| Summary: | CVE-2026-13149 boost: Brace-expansion: Denial of Service due to exponential-time complexity [fedora-all] | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Jon Weiser <jweiser> |
| Component: | boost | Assignee: | Jonathan Wakely <jwakely> |
| Status: | CLOSED NOTABUG | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | rawhide | CC: | denis.arnaud_fedora, jwakely, laurent.rineau__fedora, mcermak, ppalka |
| Target Milestone: | --- | Keywords: | Security, SecurityTracking |
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | {"flaws": ["a0503c46-8af3-4431-ae96-380459f000d0"]} | ||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2026-06-30 17:22:15 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | |||
| Bug Blocks: | 2494813 | ||
The CVE does not affect Boost. npc packages are only used to generate HTML files during preparation of the Boost release tarball, and are not used during the RPM build and are not part of the installed RPMs. I checked this with upstream and was told "The npm packages are only required at doc build time, so it makes sense to not include them in the release tarball." https://lists.boost.org/archives/list/boost@lists.boost.org/thread/APKJIASXU2DLQMGYIQR4JOMJE5CB56KB/ The Boost 1.92.0 release will not include those files in the release tarball at all, due to https://github.com/boostorg/release-tools/pull/111 which was already changed in March. That PR says "Remove "doc/node_modules" from libraries after the build. Since that directory adds extra MBs, and isn't needed." (In reply to Jonathan Wakely from comment #1) > The CVE does not affect Boost. npc packages That should say npm |
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. brace-expansion through 5.0.6 is vulnerable to denial of service. The expand() function exhibits exponential-time complexity in the number of consecutive non-expanding '{}' brace groups. An attacker who passes a crafted string to expand(), directly or transitively, can cause significant CPU consumption and event-loop blocking. The max option does not mitigate this, as it bounds the output size rather than the recursion work.