CVE-2023-4797Public exploitNetwork attack vector

Administrator command execution via unescaped archive setting

Published Jan 16, 2024 · Updated Jun 11, 2025

Command injection in Tribulant Software Newsletters before 4.9.3 allows remote authenticated users to execute arbitrary server commands. The emailarchive_olderthan setting is stored without shell escaping and later passed to PHP's exec() when the email-archive task runs. WordPress administrator access is required to save the crafted setting and trigger the task; successful exploitation runs commands with the web server process's privileges.

CVSS severity7.2
High
EPSS probability0.96%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in Tribulant Software Newsletters before 4.9.3 allows remote authenticated users to execute arbitrary server commands. The emailarchive_olderthan setting is stored without shell escaping and later passed to PHP's exec() when the email-archive task runs. WordPress administrator access is required to save the crafted setting and trigger the task; successful exploitation runs commands with the web server process's privileges.

The record

CVE
CVE-2023-4797
Published
Jan 16, 2024
Updated
Jun 11, 2025
Vendor
Tribulant Software
Product
Newsletters
Classifications
CWE-78, CWE-77, T1059.004
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jan 16, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 11, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0 <4.9.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Tribulant Software · Newslettersversion=0 <4.9.3

Published CVSS scores

7.2CISA-ADPCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
7.2NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
T1059.004Unix Shell

Public exploit references

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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