Medium severity5.3NVD Advisory· Published Mar 25, 2020· Updated Jun 17, 2026
CVE-2020-6813
CVE-2020-6813
Description
When protecting CSS blocks with the nonce feature of Content Security Policy, the @import statement in the CSS block could allow an attacker to inject arbitrary styles, bypassing the intent of the Content Security Policy. This vulnerability affects Firefox < 74.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
39<74+ 1 more
- (no CPE)range: <74
- (no CPE)range: unspecified
- osv-coords37 versionspkg:rpm/opensuse/firefox-esr&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Tumbleweedpkg:rpm/suse/MozillaFirefox-branding-SLE&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Enterprise%20Storage%205pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSSpkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSSpkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20OpenStack%20Cloud%207pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209pkg:rpm/suse/MozillaFirefox&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Enterprise%20Storage%205pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/MozillaFirefox&distro=SUSE%20OpenStack%20Cloud%207pkg:rpm/suse/MozillaFirefox&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/MozillaFirefox&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/MozillaFirefox&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/MozillaFirefox&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209
< 128.5.1-1.1+ 36 more
- (no CPE)range: < 128.5.1-1.1
- (no CPE)range: < 92.0-1.2
- (no CPE)range: < 78-35.3.1
- (no CPE)range: < 78-35.3.1
- (no CPE)range: < 78-35.3.1
- (no CPE)range: < 78-35.3.1
- (no CPE)range: < 78-35.3.1
- (no CPE)range: < 78-35.3.1
- (no CPE)range: < 78-35.3.1
- (no CPE)range: < 78-35.3.1
- (no CPE)range: < 78-35.3.1
- (no CPE)range: < 78-35.3.1
- (no CPE)range: < 78-35.3.1
- (no CPE)range: < 78-35.3.1
- (no CPE)range: < 78-35.3.1
- (no CPE)range: < 78-35.3.1
- (no CPE)range: < 78-35.3.1
- (no CPE)range: < 78-35.3.1
- (no CPE)range: < 78-35.3.1
- (no CPE)range: < 78.0.1-112.3.1
- (no CPE)range: < 78.0.1-112.3.1
- (no CPE)range: < 78.0.1-112.3.1
- (no CPE)range: < 78.0.1-112.3.1
- (no CPE)range: < 78.0.1-112.3.1
- (no CPE)range: < 78.0.1-112.3.1
- (no CPE)range: < 78.0.1-112.3.1
- (no CPE)range: < 78.0.1-112.3.1
- (no CPE)range: < 78.0.1-112.3.1
- (no CPE)range: < 78.0.1-112.3.1
- (no CPE)range: < 78.0.1-112.3.1
- (no CPE)range: < 78.0.1-112.3.1
- (no CPE)range: < 78.0.1-112.3.1
- (no CPE)range: < 78.0.1-112.3.1
- (no CPE)range: < 78.0.1-112.3.1
- (no CPE)range: < 78.0.1-112.3.1
- (no CPE)range: < 78.0.1-112.3.1
- (no CPE)range: < 78.0.1-112.3.1
Patches
Vulnerability mechanics
References
2- bugzilla.mozilla.org/show_bug.cginvdPermissions RequiredVendor Advisory
- www.mozilla.org/security/advisories/mfsa2020-08/nvdVendor Advisory
News mentions
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