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CVE-2020-5421

27
FAUCET Score

CVE-2020-5421 is a bypass vulnerability affecting Spring Framework versions 5.2.0-5.2.8, 5.1.0-5.1.17, 5.0.0-5.0.18, and 4.3.0-4.3.28, as well as older unsupported versions, potentially impacting products from NetApp, Oracle, and VMware. This vulnerability allows for a bypass of existing RFD attack protections (CVE-2015-5211) via a jsessionid path parameter, depending on the browser used. It carries a CVSS score of 6.5 (Medium), indicating a network-based attack with high attack complexity, requiring low privileges and user interaction, and potentially leading to low confidentiality impact and high integrity impact. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.3.29CPE matchmatch criteria
cpe:2.3:a:vmware:spring_framework:*:*:*:*:*:*:*:*
>= 5.0.0, < 5.0.19CPE matchmatch criteria
cpe:2.3:a:vmware:spring_framework:*:*:*:*:*:*:*:*
>= 5.1.0, < 5.1.18CPE matchmatch criteria
cpe:2.3:a:vmware:spring_framework:*:*:*:*:*:*:*:*
>= 5.2.0, < 5.2.9CPE matchmatch criteria
cpe:2.3:a:vmware:spring_framework:*:*:*:*:*:*:*:*
11.3.2CPE matchmatch criteria
cpe:2.3:a:oracle:commerce_guided_search:11.3.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.7HIGH

CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.3
Impact Score
5.8
CvssVersion
3.0

Exploit Intelligence

EPSS Score
10.74%
Probability of exploitation in next 30 days
EPSS Percentile
95.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.1074 is in the 99th percentile among its peer group of 144 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (6)

mavenpatch availablevia ghsa
Product: org.springframework:spring-framework-bomFixed in: 5.2.9
mavenpatch availablevia ghsa
Product: org.springframework:spring-framework-bomFixed in: 5.1.18
mavenpatch availablevia ghsa
Product: org.springframework:spring-framework-bomFixed in: 5.0.19
mavenpatch availablevia ghsa
Product: org.springframework:spring-framework-bomFixed in: 4.3.29
oraclepatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Fuse 7.9Fixed in: springframework
View patch

Vendor Advisories (2)

mavenGHSA-rv39-3qh7-9v7wmedium

Improper Input Validation in Spring Framework

Apr 30, 2021
redhatCVE-2020-5421Moderate

springframework: RFD protection bypass via jsessionid

Sep 17, 2020

References

lists.apache.org / thread.html/r1c679c43fa4f7846d748a937955c7921436d1b315445978254442163%40%3Ccommits.ambari.apache.org%3E
lists.apache.org / thread.html/r1eccdbd7986618a7319ee7a533bd9d9bf6e8678e59dd4cca9b5b2d7a%40%3Cissues.ambari.apache.org%3E
lists.apache.org / thread.html/r3589ed0d18edeb79028615080d5a0e8878856436bb91774a3196d9eb%40%3Ccommits.pulsar.apache.org%3E
lists.apache.org / thread.html/r503e64b43a57fd68229cac4a869d1a9a2eac9e75f8719cad3a840211%40%3Ccommits.pulsar.apache.org%3E
lists.apache.org / thread.html/r5c95eff679dfc642e9e4ab5ac6d202248a59cb1e9457cfbe8b729ac5%40%3Cissues.ambari.apache.org%3E
lists.apache.org / thread.html/r7e6a213eea7f04fc6d9e3bd6eb8d68c4df92a22e956e95cb2c482865%40%3Cissues.hive.apache.org%3E
lists.apache.org / thread.html/r8b496b1743d128e6861ee0ed3c3c48cc56c505b38f84fa5baf7ae33a%40%3Cdev.ambari.apache.org%3E
lists.apache.org / thread.html/r918caad55dcc640a16753b00d8d6acb90b4e36de4b6156d0867246ec%40%3Ccommits.pulsar.apache.org%3E
lists.apache.org / thread.html/r9f13cccb214495e14648d2c9b8f2c6072fd5219e74502dd35ede81e1%40%3Cdev.ambari.apache.org%3E
lists.apache.org / thread.html/ra889d95141059c6cbe77dd80249bb488ae53b274b5f3abad09d9511d%40%3Cuser.ignite.apache.org%3E
lists.apache.org / thread.html/raf7ca57033e537e4f9d7df7f192fa6968c1e49409b2348e08d807ccb%40%3Cuser.ignite.apache.org%3E
lists.apache.org / thread.html/rb18ed999153ef0f0cb7af03efe0046c42c7242fd77fbd884a75ecfdc%40%3Ccommits.pulsar.apache.org%3E
lists.apache.org / thread.html/rc9efaf6db98bee19db1bc911d0fa442287dac5cb229d4aaa08b6a13d%40%3Cissues.hive.apache.org%3E
lists.apache.org / thread.html/rd462a8b0dfab4c15e67c0672cd3c211ecd0e4f018f824082ed54f665%40%3Cissues.hive.apache.org%3E
lists.apache.org / thread.html/re014a49d77f038ba70e5e9934d400af6653e8c9ac110d32b1254127e%40%3Cdev.ranger.apache.org%3E
lists.apache.org / thread.html/rf00d8f4101a1c1ea4de6ea1e09ddf7472cfd306745c90d6da87ae074%40%3Cdev.hive.apache.org%3E
security.netapp.com / advisory/ntap-20210513-0009
Third Party Advisory
tanzu.vmware.com / security/cve-2020-5421
Vendor Advisory
oracle.com / security-alerts/cpuApr2021.html
PatchThird Party Advisory
oracle.com / security-alerts/cpuapr2022.html
PatchThird 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
Not ApplicableThird Party Advisory