No exploitation reportedFix available

CVE-2023-20902

Q: Is CVE-2023-20902 actively exploited?

Active exploitation of CVE-2023-20902 has not been confirmed. Its EPSS score was 0.5% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2023-20902?

CVE-2023-20902 has a CVSS v3 base score of 6.5 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N.

No exploitation reported by the sources we read.

Published2023-11-09
Fixed in2.8.3 · 2.8.3+incompatible · 2.7.3 · 2.7.3+incompatible · 2.6.5 · 1.10.18
WeaknessCWE-362

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

A timing condition in Harbor 2.6.x and below, Harbor 2.7.2 and below, Harbor 2.8.2 and below, and Harbor 1.10.17 and below allows an attacker with network access to create jobs/stop job tasks and retrieve job task information.

Timeline

dates in UTC

2023-11-0901:15CVE 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-2023-20902?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-20902?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV

Linuxfoundation harbor

Branch	Affected	Fixed in	Source
2.8	≥ 2.8.0, < 2.8.3	2.8.3	NVD · OSV
2.8	≥ 2.8.0+incompatible, < 2.8.3+incompatible	2.8.3+incompatible	OSV
2.7	≥ 2.7.0, < 2.7.3	2.7.3	NVD · OSV
2.x	≥ 2.0.0+incompatible, < 2.7.3+incompatible	2.7.3+incompatible	OSV
2.x	≥ 2.0.0, < 2.7.3	2.7.3	OSV
2.6	≥ 2.6.0, < 2.6.5	2.6.5	OSV
1.10	< 1.10.18	1.10.18	OSV
1.10	< 1.10.17	1.10.17	NVD · OSV
2.6	≥ 2.6.0, ≤ 2.6.4	no fix published	NVD

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

Fix

Update Linuxfoundation harbor to 2.8.3 · 2.8.3+incompatible · 2.7.3 · 2.7.3+incompatible · 2.6.5 · 1.10.18 · 1.10.17

Advisories and patches

github.comVendor Advisory

Detection

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

Sources

CISA-ADPSSVC decisionnone2024-09-04
OpenCVESSVC decisionnone—
CNACVSS 3.15.9read 2026-10-23
NVDCVSS 3.16.5read 2026-10-23
NVDweakness (CWE)CWE-362read 2026-10-23
FIRST EPSSEPSS score0.5 %2026-10-23
OSVaffected packages—

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
Published: 2023-11-09
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2023-20902?

Is CVE-2023-20902 actively exploited?

Active exploitation of CVE-2023-20902 has not been confirmed. Its EPSS score was 0.5% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-20902?

CVE-2023-20902 has a CVSS v3 base score of 6.5 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N.

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