CVE-2026-120634

perl-cgi: perl-cgi: Information disclosure via uncleared warning buffer in persistent environments

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Severity

Moderate

Red Hat Product Security

5.3

CVSS 3.1

Review impact separately from score.

Published · November 4, 2026

Updated · November 4, 2026

Description

A flaw was found in perl-cgi. When running in persistent server environments, the internal buffer used to forward warnings to the browser is not cleared between requests. Consequently, a user can view sensitive request data or error details from another user's session in the returned HTML comments, leading to information disclosure.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CWE-488 · Exposure of Data Element to Wrong Session