Skip to content
CVE Tracker
Back

CVE-2017-7803

When a page's content security policy (CSP) header contains a "sandbox" directive, other directives are ignored. This results in the…

High7.5EPSS 2.0%
Published
Updated
Reserved
Assigned by
mozilla

Description

When a page's content security policy (CSP) header contains a "sandbox" directive, other directives are ignored. This results in the incorrect enforcement of CSP. This vulnerability affects Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox < 55.

Scores

CVSS scores of CVE-2017-7803, by who scored it
Scored byCVSSScoreVector
NVDNVD · Modified3.0High7.5CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS (exploitation in 30 days)
2.0% · top 20% of all CVEs (2 Nov 2026)

Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.

Weakness

Affected products

  • Mozilla · Thunderbird

    • affected unspecified – < 52.3

  • Mozilla · Firefox ESR

    • affected unspecified – < 52.3

  • Mozilla · Firefox

    • affected unspecified – < 55

References (11)

Sources

The same CVE in the primary databases and aggregators, to check against.

Record last updated .