6.5

CVSS Score

3.1

-

CVSS Score

Basic Information

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CVE-2020-12480

CVE-2020-12480: CSRF in Play Framework

In Play Framework 2.6.0 through 2.8.1, the CSRF filter can be bypassed by making CORS simple requests with content types that contain parameters that can't be parsed.

(GitHub Advisory)

Miggo Vulnerability Database

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CVE-2020-12480

CVE-2020-12480:

6.5

CVSS Score

3.1

-

CVSS Score

Basic Information

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Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
com.typesafe.play:play_2.12	maven	< 2.7.5	2.7.5
com.typesafe.play:play_2.12	maven	>= 2.8.0, < 2.8.2	2.8.2

Technical Details

Vulnerability Intelligence
Miggo AI

Root Cause Analysis

The vulnerability stemmed from improper handling of invalid Content-Type headers in CSRF protection logic. The patch added 'hasInvalidContentType' checks and modified conditional logic in multiple locations. The original vulnerable functions failed to account for: 1) Requests with unparseable Content-Type headers that would return contentType.isEmpty 2) The distinction between header presence vs valid parsing. This allowed attackers to craft requests with malformed Content-Type parameters to bypass blacklist-based CSRF protection. The functions handling CSRF check decisions (call, apply, requiresCsrfCheck) were directly modified in the security patch, indicating they contained the flawed logic.

Vulnerable functions

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WAF Protection Rules

WAF Rule

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Reasoning

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