CVE-2010-2121 — Opera 9.52 allows remote attackers to cause a denial of service (resource consumption) via JavaScript code containing an infinite loop that creates IFRAME elements for invalid (1) news:// or (2) nntp:// URIs

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MEDIUM

Opera 9.52 allows remote attackers to cause a denial of service (resource consumption) via JavaScript code containing an infinite loop that creates IFRAME elements for invalid (1) news:// or (2) nntp:// URIs

Published Jun 1, 2010

4.3

MEDIUM

CVSS 2.0

EPSS 1.98%

Description

Opera 9.52 allows remote attackers to cause a denial of service (resource consumption) via JavaScript code containing an infinite loop that creates IFRAME elements for invalid (1) news:// or (2) nntp:// URIs.

Affected products

Remediation

No remediation recorded yet.

Metrics

1.98% 0.01980

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.01980

Score over time

2022–2026

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Table of values (10 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	1.98% (0.01980)	79.79th	v5 (v2026.06.15)
Jun 15, 2026	1.98% (0.01980)	77.87th	v5 (v2026.06.15)
Mar 17, 2025	0.78% (0.00780)	72.00th	v4 (v2025.03.14)
Dec 12, 2024	0.59% (0.00590)	79.00th	v3 (v2023.03.01)
Feb 8, 2024	0.59% (0.00590)	77.61th	v3 (v2023.03.01)
Mar 7, 2023	0.59% (0.00590)	74.95th	v3 (v2023.03.01)
Mar 6, 2023	1.14% (0.01136)	59.45th	v2 (v2022.01.01)
Oct 18, 2022	1.14% (0.01136)	58.28th	v2 (v2022.01.01)
Apr 1, 2022	1.14% (0.01136)	56.27th	v2 (v2022.01.01)
Feb 4, 2022	1.14% (0.01136)	34.23th	v2 (v2022.01.01)

Weaknesses (1)

CWE-399

References (3)

http://websecurity.com.ua/4238/
x_refsource_MISCExploit
http://www.securityfocus.com/archive/1/511509/100/0/threaded
mailing-listx_refsource_BUGTRAQ
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11622
vdb-entrysignaturex_refsource_OVAL

Link	Providers	Tags
http://websecurity.com.ua/4238/		x_refsource_MISCExploit
http://www.securityfocus.com/archive/1/511509/100/0/threaded		mailing-listx_refsource_BUGTRAQ
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11622		vdb-entrysignaturex_refsource_OVAL

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mitre

Published Jun 1, 2010

Updated Aug 7, 2024

Reserved Jun 1, 2010

Link CVE-2010-2121

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 16, 2026

Link CVE-2010-2121

Red Hat

Severity n/a

Public date n/a

Links CVE-2010-2121