Low [CVE-2026-77465] Denial of Service via uncontrolled recursion in TOML parsing
This low-severity Red Hat Linux advisory covers CVE-2026-77465 affecting Red Hat Enterprise Linux 10, Red Hat package: cockpit-image-builder.
Android app · Google Play
Monitor future Red Hat Linux CVEs from your phone.
Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 32 official vendor sources and 160+ reviewed platform categories.
Summary
A flaw was found in toml-node. A remote, unauthenticated attacker can exploit an uncontrolled recursion vulnerability in the TOML parser by crafting a malicious TOML document with deeply nested arrays or inline tables.
This can lead to the exhaustion of the Node.js call stack, causing a RangeError and terminating the application process, resulting in a Denial of Service (DoS). The toml npm package is bundled in cockpit-image-builder, but the vulnerable TOML parser is only invoked client-side when an authenticated user manually uploads a blueprint file.
The parsing error is caught, limiting impact to a browser-side error notification. Red Hat rates this as Low impact.
Red Hat severity: Low — CVSS 3.5 (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L). Weakness: CWE-606.
Affected Red Hat products: Red Hat Enterprise Linux 10. Red Hat does not currently list a fixing RHSA for this CVE.
Affected products named by the advisory: Red Hat package: cockpit-image-builder.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 54 minutes ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 54 minutes ago·verify at source
Mitigation checklist
- No mitigation is required. The vulnerable parser runs only in the user's browser when they actively upload a TOML blueprint file, and the application's error handling catches the resulting exception.
Official advisory · high-confidence parse· fetched 54 minutes ago·verify at source
Discussion(0)
No comments yet. Share field notes, upgrade gotchas, or questions — verify against the vendor advisory before acting on community advice.
Sign in to join the discussion.