Answer in brief
CVE-2026-91142 records a Low severity (CVSS 3.6) vulnerability in Cockpit: cockpit: unauthorized modification of login records via integer overflow. The current sources do not mark it as known exploited. The current feed maps Red Hat/cockpit (generic), Red Hat/devspaces/udi-base-rhel10 (generic), Red Hat/devspaces/udi-base-rhel9 (generic), Red Hat/devspaces/udi-rhel9 (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 3.6. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Red Hat/cockpit (generic), Red Hat/devspaces/udi-base-rhel10 (generic), Red Hat/devspaces/udi-base-rhel9 (generic), Red Hat/devspaces/udi-rhel9 (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Red Hat/cockpitgeneric | * | Not reported |
| Red Hat/devspaces/udi-base-rhel10generic | * | Not reported |
| Red Hat/devspaces/udi-base-rhel9generic | * | Not reported |
| Red Hat/devspaces/udi-rhel9generic | * | Not reported |
Published upstream
Sep 18, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 16, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 18, 2026
A flaw was found in Cockpit. An authenticated local user with a large user identifier (UID) can cause unauthorized modification and disclosure of login records. On 32-bit systems, an integer overflow during session accounting allows the user's login process to read or overwrite the legacy log entries of other accounts.
Quoted source text, attributed separately from HOL analysis.