CVE-2021-31635 jFinal Server-Side Template Injection vulnerability

Critical 9.8 Published Updated

Remote attackers can execute arbitrary code via Server-Side Template Injection in the jFinal Java web framework.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2021-31635?

CVE-2021-31635 is a critical code injection vulnerability in n/a, published on 26 Jun 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-94

Which versions are affected by CVE-2021-31635?

2 open source packages ship an affected version, including com.jfinal:jfinal. It affects 1 product.

PackageAffectedFixed in
com.jfinal:jfinal MavenAll versions to 4.9.08None
com.jfinal:jfinal MavenAll versions to 4.9.08None

Products include Jfinal Jfinal.

How do I fix CVE-2021-31635?

No fix has been published for CVE-2021-31635 yet. Limit exposure of the affected software until one is available.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2021-31635 being exploited?

There is no known exploitation of CVE-2021-31635 in the wild and no public exploit code.

Sources

Also known as GHSA-cgmm-c2m9-ff7r.

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