Page generated: 09 Nov 2026, 02:44 UTC
← Dashboard

CVE-2019-11708

Insufficient vetting of parameters passed with the Prompt:Open IPC message between child and parent processes can result in the non-sandboxed parent process opening web content chosen by a compromised child process. When combined with additional vulnerabilities this could result …

Read full description
Insufficient vetting of parameters passed with the Prompt:Open IPC message between child and parent processes can result in the non-sandboxed parent process opening web content chosen by a compromised child process. When combined with additional vulnerabilities this could result in executing arbitrary code on the user's computer. This vulnerability affects Firefox ESR < 60.7.2, Firefox < 67.0.4, and Thunderbird < 60.7.2.
CVSS 10.0 (CRITICAL) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
0.0/10
REALITY · THREAT PRIORITY
8.8/10
General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?
  • Recorded exploitation baseline: +7.00
  • Technical severity: CVSS 10: +1.50
  • Fresh EPSS: 55.87%: +0.28

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 7 documents and public datasets.

Hype components

Headline sample (25%)
0/100
Press, 30 days (60%)
0/100
Grounded branding (15%)
0/100
HYPE TOTAL0/100

Sources and documents

The Hacker News
Press · 09 Nov 2022, 08:00 · Experts Warn of Browser Extensions Spying On Users via Cloud9 Chrome Botnet Network - The Hacker News
MyBroadband
Press · 09 Nov 2022, 08:00 · Chrome extension lets attackers steal accounts and use host machines in DDoS attacks - MyBroadband
BleepingComputer
Press · 08 Nov 2022, 08:00 · Malicious extension lets attackers control Google Chrome remotely - BleepingComputer
Zimperium
Press · 08 Nov 2022, 08:00 · The Case of Cloud9 Chrome Botnet - Zimperium
The Mozilla Blog
Press · 27 Apr 2021, 07:00 · Examining JavaScript Inter-Process Communication in Firefox – Attack & Defense (Archive) - The Mozilla Blog
See all 7 source documents
The Mozilla Blog
Press · 07 Jul 2020, 07:00 · Hardening Firefox against Injection Attacks – The Technical Details – Attack & Defense (Archive) - The Mozilla Blog
Coinbase
Press · 08 Aug 2019, 07:00 · Responding to Firefox 0-days in the wild - Coinbase

Score evolution

● Hype   ● Reality

Earlier evidence-support scores are retained in history; this chart shows only the current priority definition.

First record: hype 0.0 · reality 8.8 (2026-11-02 15:12). The curve appears once the score changes.

Public exploit evidence

1

Public exploit entries / repo candidates

Source entries and unverified repository candidates are counted separately.

Public exploit evidence
Evidence context and dated references

Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs.

Evidence in context

Confidence in exploitation evidence
Exploitation recorded
Priority basis
Recorded exploitation; CVSS 10; EPSS 55.9%
Attention, last 30 days
0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential
network access, no prior privileges, no user interaction.
Observed activity
Exploitation recorded in CISA KEV.
Known scale
Not quantified.
Evidence confidence basis
Trusted exploitation confirmation

Score evaluated: 2026-11-05 13:58:03.858787+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
Published
23 Jul 2019, 13:20
First press mention
08 Aug 2019, 07:00
Added to the CISA KEV catalog
23 May 2022, 00:00
Latest press mention
09 Nov 2022, 08:00
Score calculated
05 Nov 2026, 13:58
PoCs on GitHub
1 repositories