CVE-2021-31635

Name: CVE-2021-31635
Creator: NVD / NIST
Published: 2023-06-26T19:15:09.667+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.00%

Last modified Jun 17, 2026

CVE-2021-31635 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Server-Side Template Injection (SSTI) vulnerability in jFinal v.4.9.08 allows a remote attacker to execute arbitrary code via the template function.. EPSS estimates a 1.00% chance of exploitation in the next 30 days.

Description

Server-Side Template Injection (SSTI) vulnerability in jFinal v.4.9.08 allows a remote attacker to execute arbitrary code via the template function.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

1.00%

58.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-94

Affected Software

Vendor	Product	Versions
Jfinal	Jfinal	4.9.08

References

https://github.com/jfinal/jfinal/issues/187Issue Tracking, Third Party Advisory
https://github.com/jfinal/jfinal/issues/187Issue Tracking, Third Party Advisory

Timeline

Published: Jun 26, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-31635?

Server-Side Template Injection (SSTI) vulnerability in jFinal v.4.9.08 allows a remote attacker to execute arbitrary code via the template function.

How severe is CVE-2021-31635?

CVE-2021-31635 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.00% probability of exploitation in the next 30 days.

How do I fix CVE-2021-31635?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-31635?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST