CVE-2023-46951: Cross Site Scripting vulnerability in Contribsys Sidekiq v.6.5.8 allows a remote attacker to obtain sensitive

Routine

MEDIUM 6.1DOWNGRADE

CVE-2023-46951 is a medium-severity flaw (CVSS 6.1) affecting sidekiq. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross Site Scripting vulnerability in Contribsys Sidekiq v.6.5.8 allows a remote attacker to obtain sensitive information via a crafted payload to the uniquejobs function.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.5% (top 54%)
CISA exploited list	No
Weakness	CWE-79
Published	2024-03-01
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: contribsys

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-03-01 14:15 UTCPublished CVE record published
2026-06-17 06:31 UTCUpdated Record last modified

contribsys sidekiq DOWNGRADE

Affected: 6.5.8

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.5.8

1. Check installed version

apt-cache policy sidekiq || rpm -q sidekiq || sidekiq --version

2. No fixed release: DOWNGRADE to a release before 6.5.8 (Debian / Ubuntu)

apt-cache madison sidekiq sudo apt install sidekiq=<VERSION_BEFORE_6.5.8> sudo apt-mark hold sidekiq

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list sidekiq sudo dnf downgrade sidekiq-<VERSION_BEFORE_6.5.8> sudo dnf versionlock add sidekiq

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-46951?

sidekiq: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-46951 being exploited?

CVE-2023-46951 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-46951 affect?

CVE-2023-46951 affects sidekiq. Severity is medium (CVSS 6.1). Cross Site Scripting vulnerability in Contribsys Sidekiq v.6.5.8 allows a remote attacker to obtain sensitive information via a crafted payload to the uniquejobs function.

How urgent is CVE-2023-46951?

Priority 38/100. Public exploit reference

Related CVEs

CVE-2023-46950 MEDIUM 6.1 DOWNGRADE Cross Site Scripting vulnerability in Contribsys Sidekiq v.6.5.8 allows a remote attacker to obtain sensitive
CVE-2023-26141 HIGH 7.5 UPGRADE Versions of the package sidekiq before 7.1.3 are vulnerable to Denial of Service (DoS) due to insufficient che

References

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