CVE-2026-100798
published 2026-09-29CVE-2026-100798: Cryptography misuse in Storage: Quota Manager component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.
PriorityP343high8.1CVSS 3.1
AVNACLPRNUIRSUCHIHAN
EPSS
0.20%
9.7th percentile
Cryptography misuse in Storage: Quota Manager component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.
Affected
4 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| mozilla | firefox | < Firefox 157 | Firefox 157 |
| mozilla | firefox_esr | < Firefox ESR 153.4 | Firefox ESR 153.4 |
| mozilla | thunderbird | < Thunderbird 157 | Thunderbird 157 |
| mozilla | thunderbird | < Thunderbird 153.4 | Thunderbird 153.4 |
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
Mozilla
Mozilla Foundation Security Advisory 2026-100: CVE-2026-100798
vendor_mozilla
CVE-2026-100798 Mozilla Foundation Security Advisory 2026-100: CVE-2026-100798
Mozilla Foundation Security Advisory 2026-100
CVE: CVE-2026-100798
Product: Firefox ESR
Impact: low
Fixed in: Firefox ESR 153.4
Mozilla
Mozilla Foundation Security Advisory 2026-101: CVE-2026-100798
vendor_mozilla
CVE-2026-100798 Mozilla Foundation Security Advisory 2026-101: CVE-2026-100798
Mozilla Foundation Security Advisory 2026-101
CVE: CVE-2026-100798
Product: Thunderbird
Impact: low
Fixed in: Thunderbird 157
Mozilla
Mozilla Foundation Security Advisory 2026-103: CVE-2026-100798
vendor_mozilla
CVE-2026-100798 Mozilla Foundation Security Advisory 2026-103: CVE-2026-100798
Mozilla Foundation Security Advisory 2026-103
CVE: CVE-2026-100798
Product: Thunderbird
Impact: low
Fixed in: Thunderbird 153.4
Mozilla
Mozilla Foundation Security Advisory 2026-97: CVE-2026-100798
vendor_mozilla
CVE-2026-100798 Mozilla Foundation Security Advisory 2026-97: CVE-2026-100798
Mozilla Foundation Security Advisory 2026-97
CVE: CVE-2026-100798
Product: Firefox
Impact: low
Fixed in: Firefox 157
GHSA
Cryptography misuse in Storage: Quota Manager component.
ghsa_unreviewed·2026-09-29
CVE-2026-100798 Cryptography misuse in Storage: Quota Manager component.
Cryptography misuse in Storage: Quota Manager component. This vulnerability was fixed in Firefox ESR 153.4 and Firefox 157.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-09-29
Published