Vulnerability Intelligence Report
Forced OGNL evaluation, when evaluated on raw not validated user input in tag attributes, may lead to RCE.
CVE-2021-31805
The fix issued for CVE-2020-17530 was incomplete. So from Apache Struts 2.0.0 to 2.5.29, still some of the tag’s attributes could perform a double evaluation if a developer applied forced OGNL evaluation by using the %{...} syntax. Using forced OGNL evaluation on untrusted user input can lead to a Remote Code Execution and security degradation.
Nuclei Template
CVSS Base Score
9.8
CRITICAL
EPSS Probability:85.10%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
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Weaponization
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SSVC Action
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Weaknesses (CWE)
CWE-917 ↗CWE-917 Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Apache Software Foundation | Apache Struts | 2.0.0 to 2.5.29 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Apache Software Foundation · Vendor · USA |
| Reserved | 2021-04-26T00:00:00 |
| Published | 2022-04-12T15:25:11 |
| Last Updated | 2024-08-03T23:10:30 |
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