CVE-2026-16374
published 2026-07-21CVE-2026-16374: Information disclosure in the Framework component in DevTools. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and…
PriorityP342high7.5CVSS 3.1
AVNACLPRNUINSUCHINAN
EPSS
0.32%
24.6th percentile
Information disclosure in the Framework component in DevTools. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
Affected
12 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| mozilla | firefox | < Firefox 153 | Firefox 153 |
| mozilla | firefox | < 140.13.0 | 140.13.0 |
| mozilla | firefox | < 153.0.0 | 153.0.0 |
| mozilla | firefox | — | — |
| mozilla | firefox_esr | < Firefox ESR 140.13 | Firefox ESR 140.13 |
| mozilla | thunderbird | < Thunderbird 140.13 | Thunderbird 140.13 |
| mozilla | thunderbird | < Thunderbird 153 | Thunderbird 153 |
| mozilla | thunderbird | < 140.13.0 | 140.13.0 |
| mozilla | thunderbird | — | — |
| mozilla | thunderbird | >= 141.0 < 153.0 | 153.0 |
| rhel10 | firefox-flatpak | — | — |
| rhel10 | thunderbird-flatpak | — | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
vendor_redhat7.5HIGH
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Red Hat
firefox: thunderbird: Information disclosure in the Framework component in DevTools
vendor_redhat·2026-07-21·CVSS 7.5
CVE-2026-16374 [HIGH] CWE-215 firefox: thunderbird: Information disclosure in the Framework component in DevTools
firefox: thunderbird: Information disclosure in the Framework component in DevTools
A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue:
Information disclosure in the Framework component in DevTools
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) - Affected
Package: rhel10/firefox-flatpak (Red Hat Enterprise Linux 10) - Affected
Package: rhel10/thunderbird-flatpak (Red Hat Enterprise Linux 10) - Affected
Package: thunderbird (Red Hat Enterprise Linux 10) - Affected
Package: firefox (Red Hat Enterprise Linux 6) - Out of support scope
Package: thunderbird (Red Hat Enterprise Linux 6) - Out of su
Mozilla
Mozilla Foundation Security Advisory 2026-72: CVE-2026-16374
vendor_mozilla
CVE-2026-16374 Mozilla Foundation Security Advisory 2026-72: CVE-2026-16374
Mozilla Foundation Security Advisory 2026-72
CVE: CVE-2026-16374
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 140.13
Mozilla
Mozilla Foundation Security Advisory 2026-71: CVE-2026-16374
vendor_mozilla
CVE-2026-16374 Mozilla Foundation Security Advisory 2026-71: CVE-2026-16374
Mozilla Foundation Security Advisory 2026-71
CVE: CVE-2026-16374
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 153
Mozilla
Mozilla Foundation Security Advisory 2026-70: CVE-2026-16374
vendor_mozilla
CVE-2026-16374 Mozilla Foundation Security Advisory 2026-70: CVE-2026-16374
Mozilla Foundation Security Advisory 2026-70
CVE: CVE-2026-16374
Product: Firefox ESR
Impact: high
Fixed in: Firefox ESR 140.13
Mozilla
Mozilla Foundation Security Advisory 2026-68: CVE-2026-16374
vendor_mozilla
CVE-2026-16374 Mozilla Foundation Security Advisory 2026-68: CVE-2026-16374
Mozilla Foundation Security Advisory 2026-68
CVE: CVE-2026-16374
Product: Firefox
Impact: high
Fixed in: Firefox 153
GHSA
Information disclosure in the Framework component in DevTools.
ghsa_unreviewed·2026-07-21
CVE-2026-16374 [HIGH] CWE-200 Information disclosure in the Framework component in DevTools.
Information disclosure in the Framework component in DevTools. This vulnerability was fixed in Firefox 153 and Firefox ESR 140.13.
No detection rules found.
No public exploits indexed.
2026-07-21
Published