No exploitation reportedFix available

CVE-2023-20873

Q: Is CVE-2023-20873 actively exploited?

Active exploitation of CVE-2023-20873 has not been confirmed. Its EPSS score was 1.1% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2023-20873?

CVE-2023-20873 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

No exploitation reported by the sources we read.

Published2023-04-20
Fixed in3.0.6 · 2.7.11 · 2.6.15 · 2.6.14 · 2.5.15

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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+.

Timeline

dates in UTC

2023-04-2021:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-20873?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-20873?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV

Vmware spring boot

Branch	Affected	Fixed in	Source
3.0	≥ 3.0.0, < 3.0.6	3.0.6	NVD · OSV
2.7	≥ 2.7.0, < 2.7.11	2.7.11	NVD · OSV
2.6	≥ 2.6.0, < 2.6.15	2.6.15	OSV
2.6	≥ 2.6.0, < 2.6.14	2.6.14	NVD
2.5	< 2.5.15	2.5.15	NVD · OSV

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Vmware spring boot to 3.0.6 · 2.7.11 · 2.6.15 · 2.6.14 · 2.5.15

Advisories and patches

spring.ioVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CISA-ADPSSVC decisionnone2025-04-23
OpenCVESSVC decisionnone—
CISA-ADPCVSS 3.19.82025-05-05
NVDCVSS 3.19.8read 2026-10-23
FIRST EPSSEPSS score1.1 %2026-10-22
OSVaffected packages—

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2023-04-20
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2023-20873?

Is CVE-2023-20873 actively exploited?

Active exploitation of CVE-2023-20873 has not been confirmed. Its EPSS score was 1.1% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

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

CVE-2023-20873 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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