CVE-2024-1551

Set-Cookie response headers were being incorrectly honored in multipart HTTP responses. If an attacker could control the Content-Type response header, as well as control part of the response body, they could inject Set-Cookie response headers that would have been honored by the browser. This vulnerability affects Firefox < 123, Firefox ESR < 115.8, and Thunderbird < 115.8.

• CWE-565

• https://bugzilla.mozilla.org/show_bug.cgi?id=1864385Exploit, Issue Tracking
• https://lists.debian.org/debian-lts-announce/2024/03/msg00000.htmlThird Party Advisory
• https://lists.debian.org/debian-lts-announce/2024/03/msg00001.htmlThird Party Advisory
• https://www.mozilla.org/security/advisories/mfsa2024-05/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2024-06/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2024-07/Vendor Advisory
• https://bugzilla.mozilla.org/show_bug.cgi?id=1864385Exploit, Issue Tracking
• https://lists.debian.org/debian-lts-announce/2024/03/msg00000.htmlThird Party Advisory
• https://lists.debian.org/debian-lts-announce/2024/03/msg00001.htmlThird Party Advisory
• https://www.mozilla.org/security/advisories/mfsa2024-05/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2024-06/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2024-07/Vendor Advisory

Published

Feb 20, 2024

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2024-1545Fault Injection vulnerability in RsaPrivateDecryption functi…8.8
• CVE-2024-1546When storing and re-accessing data on a networking channel, …7.5
• CVE-2024-1547Through a series of API calls and redirects, an attacker-con…6.5
• CVE-2024-1548A website could have obscured the fullscreen notification by…4.3
• CVE-2024-1549If a website set a large custom cursor, portions of the curs…6.1
• CVE-2024-1550A malicious website could have used a combination of exiting…6.1
• CVE-2024-1552Incorrect code generation could have led to unexpected numer…7.5
• CVE-2024-1553Memory safety bugs present in Firefox 122, Firefox ESR 115.7…8.1
• CVE-2024-1554The `fetch()` API and navigation incorrectly shared the same…9.8
• CVE-2024-1555When opening a website using the `firefox://` protocol handl…8.3
• CVE-2024-1556The incorrect object was checked for NULL in the built-in pr…6.5
• CVE-2024-1557Memory safety bugs present in Firefox 122. Some of these bug…8.1