CVE-2026-9733

CRITICAL

CVSS v3.1: 9.1 · EPSS: 0.0019 (8.3 percentile)

NetworkNo privilegesNo user interactionVendor advisory ref

Source data as of:

At a glance

Severity
CRITICAL
CVSS
9.1 v3.1 · NVD
EPSS
0.0019 (8.3 percentile) · FIRST.org
CISA KEV
No
Attack conditions (CVSS vector)
NetworkNo privilegesNo user interaction · Source: NVD Vector
Published
2026-06-23 · Modified: 2026-06-23
References
Jump to references (4)

CVSS / EPSS / KEV

CVSS v3.1 9.1 / 10 CRITICAL Source: NVD
EPSS 0.0019 8.3 percentile Source: FIRST.org
CISA KEV No Source: CISA

Source — CVSS: NVD · EPSS: FIRST.org · KEV: CISA. Data & Sources

Description

Mojolicious::Plugin::Web::Auth::OAuth2 versions through 0.17 for Perl have an insecure default state parameter. When no state generator is specified in the constructor, the module defaults to using a SHA-1 hash of predictable and low-entropy sources, including the epoch time (which is leaked via the HTTP Date header) and a call to Perl's built-in rand function. A predictable state allows an attacker to hijack another user's session through cross site request forgery (CSRF).

Record details

CVE ID
CVE-2026-9733
CVSS (v3.1)
9.1 (CRITICAL)
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Exploitability subscore
3.9
Impact subscore
5.2
EPSS
0.0019 (8.3 percentile) — 2026-06-24
CISA KEV
No
Weakness (CWE)
CWE-338, CWE-340
Affected configurations (CPE)
0
Published
2026-06-23
Modified
2026-06-23
Status
Deferred

References

Reference URLs as listed by NVD, grouped by a mechanical match on the link's host/pattern. Labels describe the link type only.

Related records

Other records sharing a factual facet, for cross-reference. A descriptive neighbourhood — ordering does not imply priority and is not a recommendation.

Same weakness type (CWE)

CVE-2026-11374 CRITICAL CVSS 9.0

Published the same year

CVE-2026-10561 CRITICAL CVSS 10.0 CVE-2026-27604 CRITICAL CVSS 10.0 CVE-2026-34908 CRITICAL CVSS 10.0 KEV CVE-2026-34909 CRITICAL CVSS 10.0 KEV
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