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CVE-2026-123776 Details

Description

RRD::CGI::Image versions through 0.01 for Perl pass CGI query parameters containting "tz" to tzset(), , so a FIFO or device path blocks the CGI process. The normalize_params method sends any query key matching /tz/i to tz(), which sets $ENV{TZ} to that value, with no validation. It then calls tzset(). glibc treats a TZ value starting with / or : as a file path and opens it, so a value naming a FIFO or a blocking device stalls the process inside tzset().

Metrics

CVSS 3.x Severity and Vector Strings:

No CVSS 3.x data is available for this CVE.

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://man7.org/linux/man-pages/man3/tzset.3.html	CPANSec
https://rt.cpan.org/Ticket/Display.html?id=182627	CPANSec
https://security.metacpan.org/patches/R/RRD-CGI-Image/0.01/CVE-2026-123776-r1.patch	CPANSec
http://www.openwall.com/lists/oss-security/2026/11/07/11	CVE

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-1287	Improper Validation of Specified Type of Input	CPANSec

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

Date	Action	Recorded By
Nov 7, 2026	CVE Modified	CVE
Nov 7, 2026	New CVE Received	CPANSec