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TI-2026-56386 Aliases CVE-2026-81739GHSA-hxqp-r3vv-h45f

Paytm Payment Gateway < 2.8.9 - Unauthenticated Stored XSS via Payment Callback

Priority LOW 34CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
High
Impact type
Cross-site scripting
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.

Summary

The Paytm Payment Gateway WordPress plugin before 2.8.9 does not sanitize and escape data it stores from payment callbacks before outputting it in an admin page, and the integrity check on those callbacks can be forged when the gateway is enabled without credentials, allowing unauthenticated users to store scripts that will run in the session of a store administrator.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00216 12th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Paytm Payment Gateway (Unknown): 2.8.9

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
UnknownPaytm Payment Gatewaybefore 2.8.92.8.9Patch availableCNA
  • Paytm Payment Gateway VendorUnknown Affected before 2.8.9 Fixed in 2.8.9 Patch available CNA

Remediation

  • Fix · CNA Paytm Payment Gateway (Unknown) Fixed in 2.8.9

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Paytm Payment Gateway 2.8.9

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2026-56443 Paytm Payment Gateway < 2.8.9 - Unauthenticated SQLi via Payment CallbackPriority LOW 32
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-81739
  2. 2026-10-03 Alias added: GHSA-hxqp-r3vv-h45f

References

Exploit 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences