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CVE-2026-12740: Plack::Middleware::OAuth 0 through 0.10
CVE-2026-12740. CVSS 3.1 base score 8.1 (HIGH, Source advisory). EPSS 0.00234 (percentile 0.13572), scored 24-Oct-2026.
Affected technology
Plack::Middleware::OAuth · 0 through 0.10
CORNELIUS
Description’s affected range: versions through 0.10 for Perl do not support the OAuth 2.0 state parameter
Component: Not specified by the source
File: lib/Plack/Middleware/OAuth/Handler/AccessTokenV2.pm, lib/Plack/Middleware/OAuth/Handler/RequestTokenV2.pm
Attack conditions (Source advisory, CVSS 3.1): Network (remote) · No privileges required · User interaction required
What an attacker can do
The attacker may retain access to the victim's account through their own provider credentials. Source advisory’s CVSS 3.1 assessment (base score 8.1/10) rates confidentiality and integrity impact as high; availability impact as none.
- CWE
- CWE-352
- CCR priority
- 32.5 /100 (P4)
- CVSS 3.1
- 8.1 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N · Source advisory
- EPSS
- 0.00234 · percentile 0.14195 · 2026-10-25
- KEV
- no
Provenance
- FIRST EPSS daily exploit-probability · Source record · observed 2026-10-25 19:52:47.952465+00:00 UTC
- NVD CVE API 2.0 · Source record · observed 2026-10-25 19:51:06.643138+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2026-12740.html