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CVE-2021-39309

21
FAUCET Score

CVE-2021-39309 describes a Reflected Cross-Site Scripting (XSS) vulnerability in the Parsian Bank Gateway for Woocommerce WordPress plugin, affecting versions up to and including 1.0. This flaw, stemming from a var_dump() function exposing $_POST variables in the rollback-payment.php file, allows attackers to inject malicious web scripts. Rated as Medium severity (CVSS 6.1), the vulnerability has a low attack complexity and requires user interaction (UI:R), but can lead to information disclosure (C:L) and integrity compromise (I:L). There is no evidence of active exploitation, nor are there publicly available exploit tools like Metasploit or ExploitDB modules. Community discussion and media coverage for this CVE are minimal, indicating low public awareness.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.0CPE matchmatch criteria
cpe:2.3:a:dpsoft:parsian_bank_gateway_for_woocommerce:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.76%
Probability of exploitation in next 30 days
EPSS Percentile
51.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0076 is in the 58th percentile among its peer group of 26,220 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

plugins.trac.wordpress.org / browser/parsian-bank-gateway-for-woocommerce/tags/1.0/vendor/dpsoft/parsian-payment/sample/rollback-payment.php
Third Party Advisory
wordfence.com / vulnerability-advisories
Third Party Advisory