How severe is CVE-2023-20873?

CVE-2023-20873 has a CVSS score of 9.8/10, rated CRITICAL. Immediate patching is strongly recommended.

Which packages are affected by CVE-2023-20873?

CVE-2023-20873 affects the following packages: org.springframework.boot:spring-boot-actuator-autoconfigure (Maven), org.springframework.boot:spring-boot-actuator-autoconfigure (Maven), org.springframework.boot:spring-boot-actuator-autoconfigure (Maven), org.springframework.boot:spring-boot-actuator-autoconfigure (Maven). Ecosystems affected: Maven.

How do I fix CVE-2023-20873?

Update org.springframework.boot:spring-boot-actuator-autoconfigure to 3.0.6 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2023-20873 is resolved across your whole dependency graph.

How do I detect CVE-2023-20873 in my Maven dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.springframework.boot:spring-boot-actuator-autoconfigure, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2023-20873 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Is CVE-2023-20873 actively exploited in the wild?

No public exploit code has been indexed for CVE-2023-20873 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2023-20873?

CVE-2023-20873 has an EPSS (Exploit Prediction Scoring System) score of 1.1%, placing it in the 66th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

When was CVE-2023-20873 published, and has it been updated?

CVE-2023-20873 was published on April 20, 2023 and was last updated on October 28, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

☕

☕ Maven

Not in CISA KEV

CRITICAL severity

CVE-2023-20873 — spring-boot-actuator-auto…

CRITICALFix: spring-projects/spring-boot@32444fe

CVE-2023-20873 is a critical-severity (CVSS 9.8) vulnerability in org.springframework.boot:spring-boot-actuator-autoconfigure. A fix is available for org.springframework.boot:spring-boot-actuator-autoconfigure — see the affected versions and patch details below.

Spring Boot Security Bypass with Wildcard Pattern Matching on Cloud Foundry

Also known asGHSA-g5h3-w546-pj7f

Published

Apr 20, 2023

Updated

Oct 28, 2026

Affected

4 pkgs

Patched

4 / 4

Exploits

None indexed

Exploitation data as of Nov 6, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
A successful exploit gives an attacker total control of the affected component, not partial access.
CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2023-20873.

EPSS Exploitation Probability

via FIRST.org ↗

1.1%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs66th percentile — riskier than 66% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

4 pkgs affected

☕org.springframework.boot:spring-boot-actuator-autoconfigure☕org.springframework.boot:spring-boot-actuator-autoconfigure☕org.springframework.boot:spring-boot-actuator-autoconfigure☕org.springframework.boot:spring-boot-actuator-autoconfigure

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

In Spring Boot versions 3.0.0 - 3.0.5, 2.7.0 - 2.7.10, and older unsupported versions, an application that is deployed to Cloud Foundry could be susceptible to a security bypass. Users of affected versions should apply the following mitigation: 3.0.x users should upgrade to 3.0.6+. 2.7.x users should upgrade to 2.7.11+. Users of older, unsupported versions should upgrade to 3.0.6+ or 2.7.11+.

Affected Packages

4 total 4 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`org.springframework.boot:spring-boot-actuator-autoconfigure`	≥ 3.0.0&&< 3.0.6	3.0.6`org.springframework.boot:spring-boot-actuator-autoconfigure:3.0.6`
☕Maven	`org.springframework.boot:spring-boot-actuator-autoconfigure`	≥ 2.7.0&&< 2.7.11	2.7.11`org.springframework.boot:spring-boot-actuator-autoconfigure:2.7.11`
☕Maven	`org.springframework.boot:spring-boot-actuator-autoconfigure`	≥ 2.6.0&&< 2.6.15	2.6.15`org.springframework.boot:spring-boot-actuator-autoconfigure:2.6.15`
☕Maven	`org.springframework.boot:spring-boot-actuator-autoconfigure`	all versions	2.5.15`org.springframework.boot:spring-boot-actuator-autoconfigure:2.5.15`

Affected Products

1 product · 4 configurations

Application

spring bootvmware

≥ 3.0.0 && < 3.0.6

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.springframework.boot:spring-boot-actuator-autoconfigure, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.springframework.boot:spring-boot-actuator-autoconfigure to 3.0.6 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2023-20873 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Fixing This On Your OS

If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.

Red HatImportant

The following Red Hat products do not ship the affected software component and so are not affected: * Red Hat Enterprise Linux 8, 9 * Enterprise Application Platform 6, 7, 8, XP * Data Grid 7, 8 * Migration Toolkit for Runtimes * Red Hat Build of OptaPlanner * Red Hat Integration Camel-K * Red Hat AMQ Broker 7 * Red…

Workaround published by Red Hat

Disable Cloud Foundry actuator endpoints by setting 'management.cloudfoundry.enabled' to false.

Source: Red Hat security advisory for CVE-2023-20873 (CC BY 4.0)

Product	Fixed in	Advisory
Red Hat AMQ Streams 2.6.0	`spring-boot`	RHSA-2023:7678
RHINT Camel-Springboot 3.18.3.2	`spring-boot`	RHSA-2023:5147
RHINT Camel-Springboot 3.20.2	`spring-boot`	RHSA-2023:5148

Frequently Asked Questions

O3 Security · Impact-Aware SCA

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