CVE-2022-26249Public exploitNetwork attack vector

Code execution via unneutralized spreadsheet formulas

Published Mar 24, 2022 · Updated Aug 3, 2024

CSV injection in SurveyKing 0.3.0 allows remote attackers to execute code or disclose data through a crafted questionnaire response. The public saveAnswer endpoint stores formula-prefixed answer values without neutralization, and the answers/download export writes them into a spreadsheet that interprets them as formulas. Exploitation requires a survey operator to export and open the poisoned file; the published proof demonstrates command execution and a hyperlink-based data disclosure payload.

CVSS severity9.8
Critical
EPSS probability1.88%
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 SurveyKing 0.3.0 allows remote attackers to execute code or disclose data through a crafted questionnaire response. The public saveAnswer endpoint stores formula-prefixed answer values without neutralization, and the answers/download export writes them into a spreadsheet that interprets them as formulas. Exploitation requires a survey operator to export and open the poisoned file; the published proof demonstrates command execution and a hyperlink-based data disclosure payload.

The record

CVE
CVE-2022-26249
Published
Mar 24, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-1236, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 24, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P

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 exploitPublished

Weakness, pattern, technique

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

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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