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Fencer Vulns
medium 6.5

CVE-2023-20863 json

Spring Framework vulnerable to denial of service

published 2023-04-13 3 y ago modified 2026-06-17 4 mo ago also GHSA-wxqc-pxw9-g2p8 , EUVD-2023-1417

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 66%
public exploits
0
none known

Summary

In spring framework versions prior to 5.2.24 release+ ,5.3.27+ and 6.0.8+ , it is possible for a user to provide a specially crafted SpEL expression that may cause a denial-of-service (DoS) condition.

Patch / fix

  • maven org.springframework:spring-expression 5.2.24.RELEASE, 5.3.27, 6.0.8
  • vmware spring_framework 5.2.24, 5.3.27, 6.0.8

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-20863 updated cvss 6.5

springframework: Spring Expression DoS Vulnerability

  • Red Hat Fuse 7 springframework springframework
    affected: no fix available
  • Red Hat RHINT Camel-Springboot 3.18.3.P1
    fixed: vendor fix RHSA-2023:2099
  • Red Hat RHINT Camel-Springboot 3.20.1
    fixed: vendor fix RHSA-2023:2100

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
21 mo ago

Exploit prediction

1.12% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
maven org.springframework:spring-expression
>=6.0.0, <6.0.8
>=5.3.0, <5.3.27
<5.2.24.RELEASE
6.0.8
5.3.27
5.2.24.RELEASE

Affected products

  • n/a Spring Framework

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption
  • CWE-917 Improper Neutralization of Special Elements used in an Expression Language Statement
  • CWE-770 Allocation of Resources Without Limits or Throttling
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.