CVE-2023-2819

Administrator-context JavaScript execution via arbitrary image MIME type

Published Jun 14, 2023 · Updated Dec 30, 2024

Stored XSS in the Sources UI of Proofpoint Threat Response Auto-Pull before 5.10.0 allows remote authenticated users to run JavaScript. The Sources UI accepts an administrator-supplied replacement image with an arbitrary MIME type and later serves it as executable content without restricting the type. An administrator on an adjacent network must replace the image, and user interaction then executes the stored payload in an administrator context.

CVSS severity4.3
Medium
EPSS probability0.26%
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 the Sources UI of Proofpoint Threat Response Auto-Pull before 5.10.0 allows remote authenticated users to run JavaScript. The Sources UI accepts an administrator-supplied replacement image with an arbitrary MIME type and later serves it as executable content without restricting the type. An administrator on an adjacent network must replace the image, and user interaction then executes the stored payload in an administrator context.

The record

CVE
CVE-2023-2819
Published
Jun 14, 2023
Updated
Dec 30, 2024
Vendor
Proofpoint
Product
Threat Response Auto-Pull
Classifications
CWE-79, T1203
Attack vector
adjacent
Privileges
admin

Timeline

How it unfolded

  1. Jun 14, 2023CVE publishedPublication date reported by the CVE source.
  2. Dec 30, 2024Record 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 <5.10.0

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesadmin

What is affected?

Proofpoint · Threat Response Auto-Pullversion=0 <5.10.0

Published CVSS scores

4.3Proofpoint Inc.CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
4.3NIST NVDCVSS:3.1/AV:A/AC:L/PR:H/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)
Vectoradjacent
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

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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