CVE-2026-2634Disclosure(mozilla / firefox)

LOWCVSS 9.8 · CRITICAL

Signal is active with 1 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Malicious scripts could cause desynchronization between the address bar and web content before a response is received in Firefox iOS, allowing attacker-controlled pages to be presented under spoofed domains. This vulnerability was fixed in Firefox for iOS 147.4.

mozilla CVEs Back to dashboard

0.0/ 10 priority

Sources & remediation

Vendor / third-party advisories

https://www.mozilla.org/security/advisories/mfsa2026-12/

Other references

https://bugzilla.mozilla.org/show_bug.cgi?id=1975529

Weakness type (CWE)

CWE-451

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

STABLE

Are you affected?

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

firefox

Threat summary

4 mentions across 4 observed days
Momentum state: stable

What's happening

Technical details provided in 4 signals
Disclosure: 4 classified signals
Peaked 3d ago at 1 mentions (2026-02-24); latest day: 1
4 total mentions across 4 days

Affected systems

Vendors

mozilla

Products

firefox

Deep dive

Activity timeline4 mentions / 4d

Signal classification1 categories

Disclosure

4100.0%

Referenced assets2 URLs

By indicator

Full discourse4 posts

Renwa@RenwaX23226d
Disclosure
New bugs :) CVE-2026-2634 [High] Spoofed web content presented under trusted domains using scripted navigation on Firefox iOS CVE-2026-2919 [High] Attacker-controlled content shown under spoofed domains in Focus iOS via stalled navigation and iframe redirect
Post summary
Two new high‑severity iOS browser bugs have been disclosed, enabling attackers to present spoofed content under trusted domains through navigation and iframe techniques.
160112245.7K
9.0K followersView on X
CRAC Learning - Tech@cracbot221d
Disclosure
CVE-2026-2634 (CVSS:9.8, CRITICAL) is Modified. Malicious scripts could cause desynchronization between the address bar and web content before a response is received in..https://nvd.nist.gov/vuln/detail/CVE-2026-2634 #cybersecurityawareness #cybersecurity #CVE #infosec #hacker #nvd #mitre
Post summary
The post announces CVE-2026-2634, a critical vulnerability that can desynchronize the address bar from web content via malicious scripts, with no mention of PoC, exploit, or patch.
0000031
173 followersView on X
CRAC Learning - Tech@cracbot222d
Disclosure
CVE-2026-2634 (CVSS:9.8, CRITICAL) is Modified. Malicious scripts could cause desynchronization between the address bar and web content before a response is received in..https://nvd.nist.gov/vuln/detail/CVE-2026-2634 #cybersecurityawareness #cybersecurity #CVE #infosec #hacker #nvd #mitre
Post summary
The tweet notes CVE-2026-2634’s CVSS score and a brief description, linking to the NVD entry, but does not provide any PoC or exploit details.
0000035
173 followersView on X
CVE@CVEnew225d
Disclosure
CVE-2026-2634 Malicious scripts could cause desynchronization between the address bar and web content before a response is received in Firefox iOS, allowing attacker-controlled pages… https://www.cve.org/CVERecord?id=CVE-2026-2634
Post summary
The text announces CVE-2026-2634, detailing a desynchronization flaw in Firefox iOS that could let attacker‑controlled pages appear before the address bar updates.
00000184
56.6K followersView on X

CPE platform detail1 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

1 of 1 entries

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

Explore more

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What researchers are saying

CVE-2026-2634

Renwa@RenwaX23Disclosure

Two new high‑severity iOS browser bugs have been disclosed, enabling attackers to present spoofed content under trusted domains through navigation and iframe techniques.

CRAC Learning - Tech@cracbotDisclosure

The post announces CVE-2026-2634, a critical vulnerability that can desynchronize the address bar from web content via malicious scripts, with no mention of PoC, exploit, or patch.

CRAC Learning - Tech@cracbotDisclosure

The tweet notes CVE-2026-2634’s CVSS score and a brief description, linking to the NVD entry, but does not provide any PoC or exploit details.

CVE@CVEnewDisclosure

The text announces CVE-2026-2634, detailing a desynchronization flaw in Firefox iOS that could let attacker‑controlled pages appear before the address bar updates.