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TI-2021-04454 Aliases CVE-2021-21354

Open redirect in pollbot

Priority LOW 35CWE-601Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Spoofing
Confidentiality · integrity · availability
None · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-601.

Summary

Pollbot is open source software which "frees its human masters from the toilsome task of polling for the state of things during the Firefox release process." In Pollbot before version 1.4.4 there is an open redirection vulnerability in the path of "https://pollbot.services.mozilla.com/". An attacker can redirect anyone to malicious sites. To Reproduce type in this URL: "https://pollbot.services.mozilla.com//evil.com/". Affected versions will redirect to that website when you inject a payload like "//evil.com/". This is fixed in version 1.4.4.

Why it matters now

EPSS 0.01365 71st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed PollBot (mozilla): 1.4.4

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
MozillaPollBotbefore 1.4.41.4.4Patch availableCNA
  • PollBot VendorMozilla Affected before 1.4.4 Fixed in 1.4.4 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:pollbot:*:*:*:*:*:*:*:*before 1.4.4VulnerableMozilla
  • cpe:2.3:a:mozilla:pollbot:*:*:*:*:*:*:*:* Versions before 1.4.4 Vulnerable ·Mozilla

Remediation

  • Fix · CNA PollBot (mozilla) Fixed in 1.4.4

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-21354

References

Exploit 1

Patch 2

Advisory 3

  • TI-2022-00554 open redirect in pollbot (pollbot.services.mozilla.com) in versions before 1.4.6 CVSS 3.1MEDIUM 6.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences