CVE-2026-81739 Paytm Payment Gateway WordPress - Stored XSS

Paytm Payment Gateway WordPress plugin < 2.8.9 contains a stored XSS caused by unsanitized payment callback data and forged integrity checks, letting unauthenticated users execute scripts in admin sessions, exploit requires gateway enabled without credentials.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.22% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Stored XSS
Impact
Stored XSS
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
1 October 2026
Updated
15 October 2026
Weakness
CWE-79

Vendor fix

Update to version 2.8.9 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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