CVE-2026-103482

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Source
https://cve.org/CVERecord?id=CVE-2026-103482
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-103482.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-103482
Published
2026-10-10T05:31:05Z
Modified
2026-10-11T02:46:28Z
Severity
  • 5.4 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N CVSS Calculator
Summary
Simple Newsletter Plugin <= 4.3.10 - Unauthenticated Stored Cross-Site Scripting via Subscriber Custom Field via Manage Preferences Form + Campaign Preview noptin_key Pivot
Details

The Simple Newsletter Plugin – Noptin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'noptin_fields[<custom_field_merge_tag>] (e.g. first_name)' parameter in all versions up to, and including, 4.3.10 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The attack chain requires a published campaign post whose body contains a [[subscriber.*]] merge tag; the unauthenticated attacker first POSTs the entity-encoded payload to the public manage_preferences form (which issues its own nonce on the same page), then pivots execution by embedding their confirm_key in a campaign preview URL sent to a privileged user via social engineering.

Database specific 
{
    "cna_assigner": "Wordfence",
    "cwe_ids": [
        "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/103xxx/CVE-2026-103482.json"
}
References

Affected packages

Git / github.com/hizzle-co/noptin

Affected ranges

Type
GIT
Repo
https://github.com/hizzle-co/noptin
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last Affected
ec9790396f2a1b00f9c75d7c2f84c4bf87979660
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "4.3.10"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

1.*
1.0.9
1.11.6
1.11.7
1.11.8
1.12.0
1.12.1
1.2.3
1.2.4
1.2.5
1.2.6
1.2.7
1.2.8
1.2.9
1.3.0
1.3.1
1.3.2
1.3.3
2.*
2.0.0
2.0.1
2.0.2
2.0.3
2.0.4
2.0.5
3.*
3.0.0
3.0.1
3.1.0
3.1.1
3.1.2
3.4.10
3.4.7
3.4.8
3.4.9
3.5.0
3.5.1
3.5.2
3.5.3
3.5.4
3.5.5
3.5.6
3.5.7
3.5.8
3.6.0
3.6.1
3.6.10
3.6.11
3.6.2
3.6.4
3.6.5
3.6.6
3.6.7
3.6.8
3.6.9
3.7.0
3.7.1
3.7.10
3.7.2
3.7.3
3.7.4
3.7.5
3.7.6
3.7.7
3.7.8
3.7.9
3.8.0
3.8.1
3.8.2
3.8.3
3.8.4
3.8.6
3.8.7
4.*
4.0.0
4.0.1
4.0.10
4.0.11
4.0.12
4.0.13
4.0.14
4.0.2
4.0.3
4.0.4
4.0.5
4.0.6
4.0.7
4.0.8
4.0.9
4.1.0
4.1.1
4.1.2
4.1.3
4.1.4
4.1.5
4.1.6
4.1.7
4.1.8
4.2.0
4.2.1
4.2.2
4.2.3
4.2.4
4.2.5
4.2.6
4.2.7
4.3.0
4.3.1
4.3.10
4.3.2
4.3.3
4.3.4
4.3.5
4.3.6
4.3.7
4.3.8
4.3.9
v1.*
v1.0.0
v1.0.1
v1.0.2
v1.0.3
v1.0.5
v1.1.0
v1.1.1
v1.2.0
v1.2.1
v1.2.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-103482.json"