CVE-2022-45350Network attack vector

Spreadsheet command execution via unescaped CSV cells

Published Nov 7, 2023 · Updated Apr 28, 2026

CSV injection in Pär Thernström Simple History 3.3.1 and earlier allows remote authenticated users to plant formulas in exported logs. The CSV export path writes each history cell without neutralizing spreadsheet formula prefixes, so attacker-controlled logged values become formulas when opened. Subscriber-level access can supply the data, but an administrator must export and open the CSV before spreadsheet actions run on the local workstation.

CVSS severity3.0
Low
EPSS probability0.83%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

CSV injection in Pär Thernström Simple History 3.3.1 and earlier allows remote authenticated users to plant formulas in exported logs. The CSV export path writes each history cell without neutralizing spreadsheet formula prefixes, so attacker-controlled logged values become formulas when opened. Subscriber-level access can supply the data, but an administrator must export and open the CSV before spreadsheet actions run on the local workstation.

The record

CVE
CVE-2022-45350
Published
Nov 7, 2023
Updated
Apr 28, 2026
Vendor
Pär Thernström
Product
Simple History
Classifications
CWE-1236, T1204.002
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 7, 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 <=3.3.1 changes=[{"at":"3.4.0","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Pär Thernström · Simple Historyversion=n/a <=3.3.1 changes=[{"at":"3.4.0","status":"unaffected"}]

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.8NISTCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
3.0PatchstackCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:H/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1236Improper Neutralization of Formula Elements in a CSV File
T1204.002User Execution: Malicious File

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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