A content security policy (CSP) "frame-ancestors" directive containing origins with paths allows for comparisons against those paths instea…

Published 8 y ago 2018-06-11 · modified 4 mo ago 2026-06-17 · JSON

CVSS

5.3

v3.0 · NVD

CISA KEV

not known exploited

EPSS

0.8%

percentile 57%

Public exploits

none known

A content security policy (CSP) "frame-ancestors" directive containing origins with paths allows for comparisons against those paths instead of the origin. This results in a cross-origin information leak of this path information. This vulnerability affects Firefox < 55.

Exploit prediction (EPSS)

0.82% probability of exploitation in the next 30 days, higher than 57% of all scored CVEs.

CVSS scores

Assigned by	Version	Score	Vector
NVD	3.0	5.3	`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N`
NVD	2.0	5.0	`AV:N/AC:L/Au:N/C:P/I:N/A:N`

Affected products

Mozilla Firefox

Classification

Weakness

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
CWE-346 Origin Validation Error

References

bugzilla.mozilla.org /show_bug.cgi?id=1367531 · x_refsource_CONFIRM, x_transferred
securityfocus.com /bid/100373 · vdb-entry, x_refsource_BID, x_transferred
mozilla.org /security/advisories/mfsa2017-18/ · x_refsource_CONFIRM, x_transferred
securitytracker.com /id/1039124 · vdb-entry, x_refsource_SECTRACK, x_transferred

Sources

CVE List: CVE-2017-7808
NVD: CVE-2017-7808

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