High [CVE-2026-111756] Information disclosure via array-formatted headers during cross-origin redirects
This high-severity Red Hat Linux advisory covers CVE-2026-111756; related products: Red Hat Hardened Images.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
VulniPulse record published Record updated
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 34 official vendor sources and 160+ reviewed platform categories.
Summary
Information disclosure via array-formatted headers during cross-origin redirects. Red Hat rates this important (CVSS 7.5).
Weakness: CWE-212.
Affected product named by the advisory: Red Hat Hardened Images.
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 13 hours ago·verify at source
- 1.16.1
Official advisory · high-confidence parse· fetched 13 hours ago·verify at source
Mitigation checklist
- --- CME Mitigation Guidance (2026-10-20) --- Disclaimer: The following mitigation solutions are provided as a courtesy, pending the application of an official patch. This content was generated utilizing AI tools in conjunction with data from https://cmetaxonomy.org. Customers are advised to independently evaluate and test these temporary mitigations within their own infrastructure. The highest-value action is to format all outgoing HTTP request headers as plain key-value objects rather than alternating arrays when invoking follow-redirects: upgrade to follow-redirects 1.16.1 (or the fixed Prometheus/Grafana builds), which detect if options.headers is an array and convert alternating name-value pairs into a plain JavaScript object before sanitizing and stripping headers, closing all 2 injection vectors (cross-origin HTTP redirect, protocol downgrade redirect). Until patched, this is a concern on Applications on any platform issuing requests with array-formatted sensitive headers via follow-redirects, so Configure outgoing requests to pass headers strictly as plain objects instead of alternating arrays and avoid contacting untrusted endpoints capable of triggering cross-origin redirects. These controls limit blast radius and contain exploitation, but they do not fix the underlying array-formatted header stripping bypass defect — apply the upstream patch to fully remediate.
Official advisory · high-confidence parse· fetched 13 hours 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.