CVE-2026-87870Network attack vector

Subscriber-level stored XSS via unchecked REST parameters

Published Sep 10, 2026 · Updated Sep 10, 2026

Stored cross-site scripting in Saturday Drive Scheduled Submissions Export 3.0.3 and earlier allows remote authenticated users to inject scripts. The REST endpoint accepts interval, format, and emailTo values without sufficient sanitization or output escaping and registers no permission_callback. A valid nonce and subscriber-level account are sufficient to store script that executes when another user opens an affected page.

CVSS severity6.4
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in Saturday Drive Scheduled Submissions Export 3.0.3 and earlier allows remote authenticated users to inject scripts. The REST endpoint accepts interval, format, and emailTo values without sufficient sanitization or output escaping and registers no permission_callback. A valid nonce and subscriber-level account are sufficient to store script that executes when another user opens an affected page.

The record

CVE
CVE-2026-87870
Published
Sep 10, 2026
Updated
Sep 10, 2026
Vendor
Saturday Drive
Product
Scheduled Submissions Export
Classifications
CWE-79, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=3.0.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Saturday Drive · Scheduled Submissions Exportversion=0 <=3.0.3

Published CVSS scores

6.4WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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