CVE-2023-32960Network attack vector

Sitewide stored XSS via unsanitized instance ID

Published Jun 22, 2023 · Updated Apr 28, 2026

Stored XSS in Team Updraft UpdraftPlus 1.23.3 and earlier allows remote attackers to inject script through a forged request. The action_authenticate_storage path accepts an unverified GET request and passes the raw updraftplus_instance value into build_authentication_link, which emits it into an HTML attribute without sanitization. Exploitation requires Dropbox remote storage and an authenticated administrator to visit a crafted URL; the stored script runs across wp-admin and can steal data or escalate privileges.

CVSS severity7.1
High
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 XSS in Team Updraft UpdraftPlus 1.23.3 and earlier allows remote attackers to inject script through a forged request. The action_authenticate_storage path accepts an unverified GET request and passes the raw updraftplus_instance value into build_authentication_link, which emits it into an HTML attribute without sanitization. Exploitation requires Dropbox remote storage and an authenticated administrator to visit a crafted URL; the stored script runs across wp-admin and can steal data or escalate privileges.

The record

CVE
CVE-2023-32960
Published
Jun 22, 2023
Updated
Apr 28, 2026
Vendor
Team Updraft
Product
UpdraftPlus
Classifications
CWE-352, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 22, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 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=n/a <=1.23.3 changes=[{"at":"1.23.4","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Team Updraft · UpdraftPlusversion=n/a <=1.23.3 changes=[{"at":"1.23.4","status":"unaffected"}]

Published CVSS scores

7.1PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
6.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
T1189Drive-by Compromise

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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