6.1

CVE-2021-30151: contribsys sidekiq

Modified
AliasesUBUNTU-CVE-2021-30151DEBIAN-CVE-2021-30151GHSA-grh7-935j-hg6w
Published 06-04-2021Last modified 03-08-2024

Vulnerability summary

CVE-2021-30151 is a medium (CVSS 6.1) vulnerability in contribsys sidekiq. EPSS estimates a 4.16% chance of exploitation in the next 30 days, higher than 90.8% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Routine

Not severe (CVSS 6.1, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
6.1/10
010
Medium · v3.1 (NVD)
EPSS score
4.16%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1github

Advisory lineage

Upstream 0 · Downstream 5 · Related 1
DLA-2943-1DLA-3360-1DLA-4407-1RHSA-2022:5498USN-7695-1

Timeline

  1. 06-04-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

Sidekiq through 5.1.3 and 6.x through 6.2.0 allows XSS via the queue name of the live-poll feature when Internet Explorer is used.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

4.16%

Chance of exploitation in the next 30 days

Percentile

91%

Versus all other CVEs

30-day change

No change 0.00 pp

From 4.16% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • githubUnverified

    Sidekiq

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.

Debian2 products
Contribsys1 product
  • sidekiq≤ 5.1.3 | ≥ 6.0.0, ≤ 6.2.0
RubyGems1 product
  • sidekiq< 5.2.0 | ≥ 6.0.0, < 6.2.1
Ubuntu1 product
  • ruby-sidekiqAll versions (No fix recorded) | < 5.0.4+dfsg-2ubuntu0.1~esm1 | < 5.2.7+dfsg-1ubuntu0.1~esm1

4 vendors · 5 products

References

11 links
Show all 11 references