CVE-2022-29912 — Open Redirect in Mozilla Firefox

CWE-601 — Open RedirectCWE-565 — Reliance on Cookies without Validation and Integrity Checking13 documents9 sources
Severity
6.1MEDIUMNVD
OSV4.3
EPSS
0.5%
top 32.60%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Mozilla FirefoxMozilla Firefox ESRMozilla Thunderbird
Timeline
PublishedDec 22
Latest updateOct 15

Description

Requests initiated through reader mode did not properly omit cookies with a SameSite attribute. This vulnerability affects Thunderbird < 91.9, Firefox ESR < 91.9, and Firefox < 100.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NExploitability: 2.8 | Impact: 2.7

Affected Packages8 packages

▶CVEListV5mozilla/firefoxunspecified — 100
▶NVDmozilla/firefox< 100.0
▶CVEListV5mozilla/firefox_esrunspecified — 91.9
▶CVEListV5mozilla/thunderbirdunspecified — 91.9

🔴Vulnerability Details

4
CVEList
CVE-2022-29912: Requests initiated through reader mode did not properly omit cookies with a SameSite attribute↗2022-12-22
▶
GHSA
GHSA-qf7x-w4mc-mcp8: Requests initiated through reader mode did not properly omit cookies with a SameSite attribute↗2022-12-22
▶
OSV
CVE-2022-29912: Requests initiated through reader mode did not properly omit cookies with a SameSite attribute↗2022-12-22
▶
OSV
thunderbird vulnerabilities↗2022-05-25
▶

📋Vendor Advisories

7
Ubuntu
Thunderbird vulnerabilities↗2022-05-25
▶
Ubuntu
Firefox vulnerabilities↗2022-05-11
▶
Red Hat
Mozilla: Reader mode bypassed SameSite cookies↗2022-05-03
▶
Debian
CVE-2022-29912: firefox - Requests initiated through reader mode did not properly omit cookies with a Same...↗2022
▶
Mozilla
Mozilla Foundation Security Advisory 2022-18: CVE-2022-29912↗
▶

💬Community

1
HackerOne
SameSite restrictions are lifted, and SameSite:Strict cookie are being sent.↗2025-10-15
▶
CVE-2022-29912 — Open Redirect in Mozilla Firefox | cvebase