What is CVE-2020-26882?

CVE-2020-26882 is a high-severity vulnerability in Lightbend Play Framework, classified under Uncontrolled Recursion. CVSS score: 7.5/10. Published 2020-11-06.

How severe is CVE-2020-26882?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Lightbend Play Framework

CVE-2020-26882

In Play Framework 2.6.0 through 2.8.2, data amplification can occur when an application accepts multipart/form-data JSON input.

Published 2020-11-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.014 (71.5th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 71st percentile — 71.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

Lightbend Play Framework

Weakness classification (CWE)

CWE-674 — Uncontrolled Recursion

References

www.playframework.com/security/vulnerability (Vendor Advisory)
www.playframework.com/security/vulnerability/CVE-2020-26882-JsonParseDataAmplif… (Vendor Advisory)

Frequently asked questions

What is CVE-2020-26882?: CVE-2020-26882 is a high-severity vulnerability in Lightbend Play Framework, classified under Uncontrolled Recursion. CVSS score: 7.5/10. Published 2020-11-06.
How severe is CVE-2020-26882?: High severity. CVSS v3 base score is 7.5 out of 10.