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TI-2022-01668 Aliases CVE-2022-1802GHSA-p859-wprc-3cjx

Prototype pollution in Mozilla Firefox ESR

Priority HIGH 73CWE-1321Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 11 fixed, 1 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat.

Summary

If an attacker was able to corrupt the methods of an Array object in JavaScript via prototype pollution, they could have achieved execution of attacker-controlled JavaScript code in a privileged context. This vulnerability affects Firefox ESR < 91.9.1, Firefox < 100.0.2, Firefox for Android < 100.3.0, and Thunderbird < 91.9.1.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.28493 98th percentileScored 2026-11-07
Fix Partial Firefox ESR (Mozilla): 91.9.1Firefox (Mozilla): 100.0.2+2 more productsRed Hat: 12 advisoriesRed Hat: 11 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MozillaFirefox ESRbefore 91.9.191.9.1Patch availableCNA
MozillaFirefoxbefore 100.0.2100.0.2Patch availableCNA
MozillaFirefox for Androidbefore 100.3.0100.3.0Patch availableCNA
MozillaThunderbirdbefore 91.9.191.9.1Patch availableCNA
  • Firefox ESR VendorMozilla Affected before 91.9.1 Fixed in 91.9.1 Patch available CNA
  • Firefox VendorMozilla Affected before 100.0.2 Fixed in 100.0.2 Patch available CNA
  • Firefox for Android VendorMozilla Affected before 100.3.0 Fixed in 100.3.0 Patch available CNA
  • Thunderbird VendorMozilla Affected before 91.9.1 Fixed in 91.9.1 Patch available CNA

CPE configurations NVD · 5

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*before 100.0.2VulnerableMozilla
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*before 91.9.1VulnerableMozilla
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*before 91.9.1VulnerableMozilla
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*before 100.3.0VulnerableMozilla
cpe:2.3:o:google:android:-:*:*:*:*:*:*:*not specified by NVDRunning onGoogle
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 100.0.2 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* Versions before 91.9.1 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 91.9.1 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 100.3.0 Vulnerable ·Mozilla
  • cpe:2.3:o:google:android:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Google

Remediation

  • Fix · CNA Firefox ESR (Mozilla) Fixed in 91.9.1
  • Fix · CNA Firefox (Mozilla) Fixed in 100.0.2
  • Fix · CNA Firefox for Android (Mozilla) Fixed in 100.3.0
  • Fix · CNA Thunderbird (Mozilla) Fixed in 91.9.1

Red Hat 12 advisories

  • RHSA-2022:4776 Released 2022-05-27 · Red Hat rating Critical
    firefox security update
    • Red Hat Enterprise Linux AppStream (v. 8) firefox-91.9.1-1.el8_6
  • RHSA-2022:4769 Released 2022-05-27 · Red Hat rating Critical
    thunderbird security update
    • Red Hat Enterprise Linux AppStream (v. 8) thunderbird-91.9.1-1.el8_6
  • RHSA-2022:4765 Released 2022-05-27 · Red Hat rating Critical
    firefox security update
    • Red Hat Enterprise Linux AppStream (v. 9) firefox-91.9.1-1.el9_0
Show 9 more Red Hat advisories
  • RHSA-2022:4768 Released 2022-05-27 · Red Hat rating Critical
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v. 8.2) firefox-91.9.1-1.el8_2
  • RHSA-2022:4772 Released 2022-05-27 · Red Hat rating Critical
    thunderbird security update
    • Red Hat Enterprise Linux AppStream (v. 9) thunderbird-91.9.1-1.el9_0
  • RHSA-2022:4766 Released 2022-05-27 · Red Hat rating Critical
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.4) firefox-91.9.1-1.el8_4
  • RHSA-2022:4770 Released 2022-05-27 · Red Hat rating Critical
    thunderbird security update
    • Red Hat Enterprise Linux AppStream E4S (v. 8.1) thunderbird-91.9.1-1.el8_1
  • RHSA-2022:4774 Released 2022-05-27 · Red Hat rating Critical
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.4) thunderbird-91.9.1-1.el8_4
  • RHSA-2022:4767 Released 2022-05-27 · Red Hat rating Critical
    firefox security update
    • Red Hat Enterprise Linux AppStream E4S (v. 8.1) firefox-91.9.1-1.el8_1
  • RHSA-2022:4773 Released 2022-05-26 · Red Hat rating Critical
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v. 8.2) thunderbird-91.9.1-1.el8_2
  • RHSA-2022:4729 Released 2022-05-24 · Red Hat rating Critical
    firefox security update
    • Red Hat Enterprise Linux Client (v. 7) firefox-91.9.1-1.el7_9
    • Red Hat Enterprise Linux Client Optional (v. 7) firefox-91.9.1-1.el7_9
    • Red Hat Enterprise Linux Server (v. 7) firefox-91.9.1-1.el7_9
    • Red Hat Enterprise Linux Server Optional (v. 7) firefox-91.9.1-1.el7_9
    • Red Hat Enterprise Linux Workstation (v. 7) firefox-91.9.1-1.el7_9
    • Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-91.9.1-1.el7_9
  • RHSA-2022:4730 Released 2022-05-24 · Red Hat rating Critical
    thunderbird security update
    • Red Hat Enterprise Linux Client (v. 7) thunderbird-91.9.1-1.el7_9
    • Red Hat Enterprise Linux Server Optional (v. 7) thunderbird-91.9.1-1.el7_9
    • Red Hat Enterprise Linux Workstation (v. 7) thunderbird-91.9.1-1.el7_9

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Mozilla Firefox, Firefox ESR and 2 more products 100.0.2, 100.3.0, 91.9.1

    2 records Highest priority Priority HIGH 1 HIGH, 1 MEDIUM

    Other records, highest priority first

    • TI-2022-01402 Prototype pollution in Mozilla Firefox ESRPriority MEDIUM 57
    Show all 2 records →

Vendor assessments

Red Hat

Red Hat rating: Critical. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2022:4769, RHSA-2022:4776
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2022:4765, RHSA-2022:4772
Red Hat Enterprise Linux AppStream E4S (v. 8.1)Fixed RHSA-2022:4767, RHSA-2022:4770
Red Hat Enterprise Linux AppStream EUS (v. 8.2)Fixed RHSA-2022:4768, RHSA-2022:4773
Red Hat Enterprise Linux AppStream EUS (v.8.4)Fixed RHSA-2022:4766, RHSA-2022:4774
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2022:4729, RHSA-2022:4730
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2022:4729
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2022:4729
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2022:4729, RHSA-2022:4730
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2022:4729, RHSA-2022:4730
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2022:4729

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-1802
  2. 2026-10-03 Alias added: GHSA-p859-wprc-3cjx

References

Advisory 2

  • TI-2024-08981 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-09832 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.6
  • TI-2019-08769 Improper input validation in Mozilla Firefox ESR KEVCVSS 3.1CRITICAL 10.0
  • TI-2010-03577 Mozilla Firefox 3.5.x through 3.5.14 and 3.6.x through 3.6.11, Thunderbird 3.1.6 before… KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-04799 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
  • TI-2023-04477 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
See all 3444 →

Sources

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