CVE-2018-5135

N/A
Published: June 11, 2018 at 09:00 PM UTC
Updated: June 17, 2026 at 01:59 AM UTC
1 product affected across 1 vendorFirefox

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Severity
N/A
Exploit prediction
EPSS 1%

Description

WebExtensions can bypass normal restrictions in some circumstances and use "browser.tabs.executeScript" to inject scripts into contexts where this should not be allowed, such as pages from other WebExtensions or unprivileged "about:" pages. This vulnerability affects Firefox < 59.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 59
Affected range stops below 59, so it looks safe — our inference, not a vendor statement
Affected range stops below 59.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (5)

VDB Entryx_refsource_BIDThird Party Advisory
http://www.securityfocus.com/bid/103386
VDB Entryx_refsource_SECTRACKThird Party Advisory
http://www.securitytracker.com/id/1040514
x_refsource_CONFIRMPermissions Required
https://bugzilla.mozilla.org/show_bug.cgi?id=1431371
Vendor Advisoryx_refsource_UBUNTUThird Party Advisory
https://usn.ubuntu.com/3596-1/

CVSS

Confidentiality
NONE
Integrity
PARTIAL
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-862

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