CVE-2026-81809Network attack vectorHinoki check available

Unauthenticated SQL injection via forged payment callbacks

Published Oct 1, 2026 · Updated Oct 1, 2026

SQL injection in Paytm Payment Gateway before 2.8.9 allows remote attackers to alter database queries through payment callbacks. The check_paytm_response handler passes callback fields to saveTxnResponse, which uses them in a SQL statement without proper escaping; an empty merchant key permits forged callback checksums. Exploitation requires the WooCommerce gateway to be enabled without credentials, and injected queries can affect the merchant site's database.

CVSS severityUnavailable
Unscored
EPSS probability0.18%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

SQL injection in Paytm Payment Gateway before 2.8.9 allows remote attackers to alter database queries through payment callbacks. The check_paytm_response handler passes callback fields to saveTxnResponse, which uses them in a SQL statement without proper escaping; an empty merchant key permits forged callback checksums. Exploitation requires the WooCommerce gateway to be enabled without credentials, and injected queries can affect the merchant site's database.

The record

CVE
CVE-2026-81809
Published
Oct 1, 2026
Updated
Oct 1, 2026
Vendor
Paytm Payments Services Limited
Product
Paytm Payment Gateway
Classifications
T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 1, 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=0 <2.8.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Paytm Payments Services Limited · Paytm Payment Gatewayversion=0 <2.8.9

Published CVSS scores

No CVSS assessment is available in this record.

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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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