RFD Protection Bypass via jsessionid

Summary

In Spring Framework versions 5.2.0 - 5.2.8, 5.1.0 - 5.1.17, 5.0.0 - 5.0.18, 4.3.0 - 4.3.28, and older unsupported versions, the protections against RFD attacks from CVE-2015-5211 may be bypassed depending on the browser used through the use of a jsessionid path parameter.

Timeline

1. Sep 19, 2020, 3:45 AM UTCCVE published
2. Oct 8, 2026, 9:02 PM UTCCISA SSVC assessment

   Exploitation: none · Automatable: no · Technical impact: partial

3. Oct 8, 2026, 9:03 PM UTCRecord last updated
4. Oct 22, 2026EPSS reached 10%

   FIRST estimates at least a 10% chance of exploitation in the next 30 days

Affected versions

• Spring by VMware Spring Framework

  From 4.3 · fixed in 4.3.29; From 5.0 · fixed in 5.0.19; From 5.1 · fixed in 5.1.18; From 5.2 · fixed in 5.2.9

• org.springframework:spring-framework-bomMaven

  From 5.2.0 · fixed in 5.2.9

• org.springframework:spring-framework-bomMaven

  From 5.1.0 · fixed in 5.1.18

• org.springframework:spring-framework-bomMaven

  From 5.0.0 · fixed in 5.0.19

• org.springframework:spring-framework-bomMaven

  fixed in 4.3.29

References 24