What is CVE-2023-1892?

CVE-2023-1892 is a critical-severity vulnerability in Contribsys Sidekiq, classified under Cross-site Scripting. CVSS score: 9.6/10. Published 2023-04-21.

How severe is CVE-2023-1892?

Critical severity. CVSS v3 base score is 9.6 out of 10.

Is CVE-2023-1892 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Contribsys Sidekiq

CVE-2023-1892

Cross-site Scripting (XSS) - Reflected in GitHub repository sidekiq/sidekiq prior to 7.0.8.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2023-04-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.027 (85.6th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 85.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.027 · newest: 0.027 · change: 0.000

Affected products

Contribsys Sidekiq
Sidekiq Sidekiq/sidekiq — versions 7.0.4, unspecified

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

ARPSyndicate/cve-scores

References

huntr.dev/bounties/e35e5653-c429-4fb8-94a3-cbc123ae4777 (Exploit, Patch, Third Party Advisory)
github.com/sidekiq/sidekiq/commit/458fdf74176a9881478c48dc5cf0269107b22214 (Patch)

Frequently asked questions

What is CVE-2023-1892?: CVE-2023-1892 is a critical-severity vulnerability in Contribsys Sidekiq, classified under Cross-site Scripting. CVSS score: 9.6/10. Published 2023-04-21.
How severe is CVE-2023-1892?: Critical severity. CVSS v3 base score is 9.6 out of 10.
Is CVE-2023-1892 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.