CVE-2026-91831

lowpriority · track · 0EPSS 0.002 · 5 %ile
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.16% (5th) EPSS
CVSS 3.8 · low
Is it mine?
0 products
Check your exposure
Who says so?
— sources

EPSS · scored 2026-10-22

The Subscribe to Comments WordPress plugin before 2.3.3 does not sanitise newline characters from a notification sender-name setting before using it in e-mail headers, allowing users with Author-level access and above to inject arbitrary e-mail headers, such as a hidden Bcc, and to spoof the sender.

01

cvss

Technical severity, 0–10. One row per scoring source.

3.8
010

base score 0–10 · higher = more severe · hover a vector to decode

v3.13.8lowCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:Nsecondary · contact@wpscan.comexploitability 1.2 · impact 2.5
v3.13.5lowCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-93USCWE-93US
04

affected products

Products and version ranges known to be affected.

No affected products recorded.

05

sources

Which sources assert this record, and when.

NVDCVE.orgMITRE
published 2026-10-19modified 2026-10-19
06

references (1) nvd

External citations — patches, advisories, analysis.

scry

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