CVE-2026-92036
published 2026-09-15CVE-2026-92036: Incorrect boundary conditions in the Networking: HTTP component. This vulnerability was fixed in Firefox 156 and Thunderbird 156.
PriorityP350critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
EPSS
0.55%
45.3th percentile
Incorrect boundary conditions in the Networking: HTTP component. This vulnerability was fixed in Firefox 156 and Thunderbird 156.
Affected
4 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| mozilla | firefox | < Firefox 156 | Firefox 156 |
| mozilla | firefox | < 156.0.0 | 156.0.0 |
| mozilla | thunderbird | < Thunderbird 156 | Thunderbird 156 |
| mozilla | thunderbird | < 156.0 | 156.0 |
CVSS provenance
nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vendor_redhat7.5HIGH
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Red Hat
firefox: thunderbird: Incorrect boundary conditions in the Networking: HTTP component
vendor_redhat·2026-09-15·CVSS 7.5
CVE-2026-92036 [HIGH] CWE-787 firefox: thunderbird: Incorrect boundary conditions in the Networking: HTTP component
firefox: thunderbird: Incorrect boundary conditions in the Networking: HTTP component
Incorrect boundary conditions in the Networking: HTTP component. This vulnerability was fixed in Firefox 156 and Thunderbird 156.
A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue:
Incorrect boundary conditions in the Networking: HTTP component
Statement: Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.
Package: firefox (Red Hat Enterprise Linux 10) - Not affected
Package: rhel10/firefox-flatpak (Red Hat Enterprise Linux 10) - Not affected
Package: rhel10/thunderbird-flatpak (Red Hat Enterprise Linux 10) - Not affected
Package: thunderbird (Red Hat Enterprise Linux
Mozilla
Mozilla Foundation Security Advisory 2026-94: CVE-2026-92036
vendor_mozilla
CVE-2026-92036 Mozilla Foundation Security Advisory 2026-94: CVE-2026-92036
Mozilla Foundation Security Advisory 2026-94
CVE: CVE-2026-92036
Product: Thunderbird
Impact: low
Fixed in: Thunderbird 156
Mozilla
Mozilla Foundation Security Advisory 2026-90: CVE-2026-92036
vendor_mozilla
CVE-2026-92036 Mozilla Foundation Security Advisory 2026-90: CVE-2026-92036
Mozilla Foundation Security Advisory 2026-90
CVE: CVE-2026-92036
Product: Firefox
Impact: low
Fixed in: Firefox 156
VulDB
Mozilla Firefox up to 155 HTTP input validation (EUVD-2026-78499)
vuldb·2026-09-21·CVSS 9.8
CVE-2026-92036 [CRITICAL] Mozilla Firefox up to 155 HTTP input validation (EUVD-2026-78499)
A vulnerability categorized as critical has been discovered in Mozilla Firefox up to 155. This issue affects some unknown processing of the component HTTP. Executing a manipulation can lead to improper input validation.
This vulnerability appears as CVE-2026-92036. The attack may be performed from remote. There is no available exploit.
It is advisable to upgrade the affected component.
GHSA
Incorrect boundary conditions in the Networking: HTTP component.
ghsa_unreviewed·2026-09-15
CVE-2026-92036 Incorrect boundary conditions in the Networking: HTTP component.
Incorrect boundary conditions in the Networking: HTTP component. This vulnerability was fixed in Firefox 156.
No detection rules found.
No public exploits indexed.
2026-09-15
Published