VIR Vulnerability Intelligence Relay

CVE-2012-4142

medium
Published 2012-08-06 · Modified 2026-04-29
💬 Discuss on Community ✚ Propose mitigation
CVSS v3
—
CVSS v4 NEW
—
not yet in upstream
VIR risk
4.3

Description

Opera before 12.01 on Windows and UNIX, and before 11.66 and 12.x before 12.01 on Mac OS X, ignores some characters in HTML documents in unspecified circumstances, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks via a crafted document.

Predictions

Exploit likelihood
20%
Patch ETA
—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact
OSVersionStatusFixed in
linux linux-kernelnot-affected
macos macosnot-affected

Application impact
VendorProductVersionsFixed
operaopera_browser{"endIncluding":"12.00"}
operaopera_browser12.00
operaopera_browser10.00
operaopera_browser10.01
operaopera_browser10.10
operaopera_browser10.11
operaopera_browser10.50
operaopera_browser10.51
operaopera_browser10.52
operaopera_browser10.53
operaopera_browser10.54
operaopera_browser10.60
operaopera_browser10.61
operaopera_browser10.62
operaopera_browser10.63
operaopera_browser11.00
operaopera_browser11.01
operaopera_browser11.10
operaopera_browser11.11
operaopera_browser11.50
operaopera_browser11.51
operaopera_browser11.52
operaopera_browser11.52.1100
operaopera_browser11.60
operaopera_browser11.61
operaopera_browser11.62
operaopera_browser11.64

References

CWEs

CWE-79

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.