What’s Vulnerable › Vulnerabilities

CVE-2017-7846

• Severity: high (CVSS 8.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-06-11 · updated 2026-06-17
• Weakness: CWE-74

Description

It is possible to execute JavaScript in the parsed RSS feed when RSS feed is viewed as a website, e.g. via "View -> Feed article -> Website" or in the standard format of "View -> Feed article -> default format". This vulnerability affects Thunderbird < 52.5.2.

Affected products

• Debian Linux: 7.0, 8.0, 9.0
• Mozilla Thunderbird: before 52.5.2 — fixed in 52.5.2
• RedHat Enterprise Linux Desktop: 6.0, 7.0
• RedHat Enterprise Linux Server: 6.0, 7.0
• RedHat Enterprise Linux Server Aus: 7.4
• RedHat Enterprise Linux Server Eus: 7.4, 7.5
• RedHat Enterprise Linux Workstation: 6.0, 7.0

How to fix

Upgrade to a fixed version: Mozilla Thunderbird 52.5.2. Check the vendor advisory for mitigations.

References

• http://www.securityfocus.com/bid/102258
• http://www.securitytracker.com/id/1040123
• https://access.redhat.com/errata/RHSA-2018:0061
• https://bugzilla.mozilla.org/show_bug.cgi?id=1411716
• https://lists.debian.org/debian-lts-announce/2017/12/msg00026.html
• https://www.debian.org/security/2017/dsa-4075
• https://www.mozilla.org/security/advisories/mfsa2017-30/
• http://www.securityfocus.com/bid/102258
• http://www.securitytracker.com/id/1040123
• https://access.redhat.com/errata/RHSA-2018:0061
• https://bugzilla.mozilla.org/show_bug.cgi?id=1411716
• https://lists.debian.org/debian-lts-announce/2017/12/msg00026.html

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