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CVE-2020-17530

98
FAUCET Score

CVE-2020-17530 is a critical remote code execution (RCE) vulnerability affecting Apache Struts versions 2.0.0 through 2.5.25, stemming from forced OGNL evaluation on user input in tag attributes. This flaw carries a CVSS score of 9.8 (Critical) due to its network-based attack vector, low complexity, and complete compromise of confidentiality, integrity, and availability. The vulnerability is actively exploited in the wild, with public exploit modules available in Metasploit and Nuclei, and has garnered significant community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.0.0, < 2.5.30CPE matchmatch criteria
cpe:2.3:a:apache:struts:*:*:*:*:*:*:*:*
12.2.1.3.0CPE matchmatch criteria
cpe:2.3:a:oracle:business_intelligence:12.2.1.3.0:*:*:*:enterprise:*:*:*
12.2.1.4.0CPE matchmatch criteria
cpe:2.3:a:oracle:business_intelligence:12.2.1.4.0:*:*:*:enterprise:*:*:*
8.0.0CPE matchmatch criteria
cpe:2.3:a:oracle:communications_diameter_intelligence_hub:8.0.0:*:*:*:*:*:*:*
8.1.0CPE matchmatch criteria
cpe:2.3:a:oracle:communications_diameter_intelligence_hub:8.1.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
95.62%
Probability of exploitation in next 30 days
EPSS Percentile
99.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Added to KEV · Nov 3, 2021
Metasploit: Apache Struts 2 Forced Multi OGNL Evaluation · Sep 14, 2020
Nuclei: CVE-2020-17530 · Jan 27, 2021
This CVE's current EPSS score of 0.9562 is in the 99th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

mavenpatch availablevia ghsa
Product: org.apache.struts:struts2-coreFixed in: 2.5.26
oraclepatch availablevia nvd_reference
View patch

Vendor Advisories (2)

mavenGHSA-jc35-q369-45pvcritical

Remote code execution in Apache Struts

Feb 9, 2022
redhatCVE-2020-17530Important

struts2: using forced OGNL evaluation on untrusted user input can lead to a RCE and security degradation

Dec 8, 2020

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
jvn.jp / en/jp/JVN43969166/index.html
Third Party Advisory
packetstormsecurity.com / files/160721/Apache-Struts-2-Forced-Multi-OGNL-Evaluation.html
Third Party AdvisoryVDB Entry
cwiki.apache.org / confluence/display/WW/S2-061
Vendor Advisory
security.netapp.com / advisory/ntap-20210115-0005
PatchThird Party Advisory
oracle.com / security-alerts/cpuApr2021.html
PatchThird Party Advisory
oracle.com / security-alerts/cpuapr2022.html
Third Party Advisory
oracle.com / security-alerts/cpujan2021.html
PatchThird Party Advisory
oracle.com / security-alerts/cpujan2022.html
PatchThird Party Advisory
oracle.com / /security-alerts/cpujul2021.html
PatchThird Party Advisory
oracle.com / security-alerts/cpuoct2021.html
PatchThird Party Advisory
openwall.com / lists/oss-security/2022/04/12/6
Mailing ListThird Party Advisory