Dashboard / CVE-2026-123776

CVE-2026-123776

CRITICAL
INFO Priority: 0.06 BB Relevance: 80/100
Published: 2026-11-07 Modified: 2026-11-12 First seen: 2026-11-07 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: High
I: High
A: High

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().

Weakness Classification (1)

Affected Software (3)

VendorProductVersion
— — 0
— — 0
— — 0

References & Advisories (4)

https://rt.cpan.org/Ticket/Display.html?id=182627
vendor-advisory issue-tracking patch

Bug Bounty Relevance

80 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

9.8 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploitation Probability

0.63%
Raw Score 0.006330
Percentile 50.9%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00633
2026-11-12
0.00633
2026-11-10
0.00240
2026-11-09
0.00240
2026-11-08
0.00240

Intelligence Sources

mitre ref →
nvd ref →

External Links