CVE-2021-31635

CRITICALNVD 9.89.8—

9.8

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

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 82.5%
KEV: Not listed

Published

June 26, 2023

Last Modified

December 5, 2024

Advisory Details (1)

Auto-updated May 31, 2026

No patch confirmed yet.

generic

Server Side Template Injection leading to Remote Code Execution · Issue #187 · jfinal/jfinal · GitHub

https://github.com/jfinal/jfinal/issues/187

Patch Availability(1)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
maven	com.jfinal:jfinal	—	ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)

Maven(1)

Package	Vulnerable range	Fixed in	Dependents
com.jfinal:jfinal	1.4 ... 4.9.08 (36 versions)	—	—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-94Improper Control of Generation of Code (Code Injection)

Data Freshness Timeline

(refreshed 11× in last 7d / 16× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-24 22:29 UTCEG score recompute
2026-05-24 22:29 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2021-31635?

CVE-2021-31635 is a critical vulnerability published on June 26, 2023. Server-Side Template Injection (SSTI) vulnerability in jFinal v.4.9.08 allows a remote attacker to execute arbitrary code via the template function.

When was CVE-2021-31635 disclosed?

CVE-2021-31635 was first published in the National Vulnerability Database on June 26, 2023, with the most recent update on December 5, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-31635 actively exploited?

CVE-2021-31635 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 82.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-31635?

CVE-2021-31635 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2021-31635?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-31635, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2021-31635

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CVE-2021-31635

Published

Last Modified

Advisory Details (1)

Server Side Template Injection leading to Remote Code Execution · Issue #187 · jfinal/jfinal · GitHub

Patch Availability(1)

Affected Packages

Weakness Classification(1)

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-31635?

Same product

Same CWE

CVE-2021-31635

📅 Published

🔄 Last Modified

📋 Advisory Details (1)

Server Side Template Injection leading to Remote Code Execution · Issue #187 · jfinal/jfinal · GitHub

Patch Availability(1)

Affected Packages

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-31635?

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Last Modified

Advisory Details (1)

Frequently asked(5)

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