CVE-2026-12318Patch(mozilla / firefox)

LOWCVSS 7.3 · HIGH

Signal is active with 3 mentions in latest observed window

Immediate actions

Patch mozilla firefox systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

Incorrect boundary conditions in the Libraries component in NSS. This vulnerability was fixed in Firefox 152 and Thunderbird 152.

mozilla CVEs Back to dashboard

0.5/ 10 priority

Sources & remediation

Vendor / third-party advisories

Other references

https://bugzilla.mozilla.org/show_bug.cgi?id=2023478

Weakness type (CWE)

CWE-119

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

firefox
thunderbird

Threat summary

Patch or workaround signal is available
3 mentions across 1 observed day

What's happening

Patch or workaround mentioned in 2 signals
Technical details provided in 3 signals
Disclosure: 1 classified signal
3 total mentions across 1 day

Affected systems

Vendors

mozilla

Products

firefoxthunderbird

Deep dive

Activity timeline3 mentions / 1d

Signal classification2 categories

Patch

266.7%

Disclosure

133.3%

Referenced assets4 URLs

By indicator

Full discourse3 posts

Vulmon Vulnerability Feed@VulmonFeeds93d
Disclosure
CVE-2026-12318 Incorrect Boundary Conditions in NSS Libraries Component Fixed in... https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-12318 Vulnerability Alert Subscriptions: https://alerts.vulmon.com/?utm_source=twitter&utm_medium=social&utm_campaign=2102281&utm_content=1
Post summary
The post reports that CVE‑2026‑12318, a boundary‑condition flaw in NSS libraries, has been fixed, but it provides no proof‑of‑concept, exploit, or detailed patch information.
0001038
4.0K followersView on X
Infoflowcloud@infoflowcloud93d
Patch
🚨*CVE* CVE-2026-12318 Incorrect boundary conditions in the Libraries component in NSS. This vulnerability was fixed in Firefox 152 and Thunderbird 152. https://www.cve.org/CVERecord?id=CVE-2026-12318 ----- Traducción: CVE-2026-12318 Condiciones de contorno incorrectas en el … http://infoflow.cloud`
Post summary
The tweet reports CVE-2026-12318, noting it’s a boundary condition flaw fixed in Firefox 152 and Thunderbird 152, with no exploit or active use mentioned.
0000026
82 followersView on X
CVE@CVEnew93d
Patch
CVE-2026-12318 Incorrect boundary conditions in the Libraries component in NSS. This vulnerability was fixed in Firefox 152 and Thunderbird 152. https://www.cve.org/CVERecord?id=CVE-2026-12318
Post summary
The notice reports the CVE as fixed in Firefox 152 and Thunderbird 152 without evidence of active exploitation or PoC.
00000290
57.6K followersView on X

CPE platform detail2 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

2 of 2 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	mozilla	firefox	-	-	-
App	mozilla	thunderbird	-	-	-

Explore more

Back to dashboard mozilla CVEs firefox vulnerabilities